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Steven Winter Associates, Inc. - LGEA Report Glen Ridge Public Schools – Ridgewood Avenue School /84

December 29, 2010

Local Government Energy Program

Energy Audit Final Report

Glen Ridge Public Schools Ridgewood Avenue School

235 Ridgewood Avenue Glen Ridge, NJ 07028

Project Number: LGEA78

Steven Winter Associates, Inc. 293 Route 18, Suite 330 Telephone (866) 676-1972

Building Systems Consultants East Brunswick, NJ 08816 Facsimile (203) 852-0741 www.swinter.com

Steven Winter Associates, Inc. - LGEA Report Glen Ridge Public Schools –Ridgewood Avenue School /84

TABLE OF CONTENTS

TABLE OF CONTENTS .................................................................................................................. 2

EXECUTIVE SUMMARY ................................................................................................................. 3

HISTORICAL ENERGY CONSUMPTION ........................................................................................ 8

RENEWABLE AND DISTRIBUTED ENERGY MEASURES .......................................................... 36

PROPOSED ENERGY CONSERVATION MEASURES ................................................................ 38

APPENDIX A: EQUIPMENT LIST ................................................................................................. 58

APPENDIX B: LIGHTING STUDY ................................................................................................. 63

APPENDIX C: THIRD PARTY ENERGY SUPPLIERS .................................................................. 70

APPENDIX D: GLOSSARY AND METHOD OF CALCULATIONS ............................................... 73

APPENDIX E: STATEMENT OF ENERGY PERFORMANCE FROM ENERGY STAR® ............... 79

APPENDIX F: INCENTIVE PROGRAMS ....................................................................................... 80

APPENDIX G: ENERGY CONSERVATION MEASURES ............................................................. 82

APPENDIX H: METHOD OF ANALYSIS ....................................................................................... 84


EXECUTIVE SUMMARY The Glen Ridge Public Schools Ridgewood Avenue School is a two-story building with a basement comprising a total conditioned floor area of 102,436 square feet. The original structure was built in 1902, with major renovations in 1908, 1951, 1961 and 1993. The following table provides an overview of current energy usage in the building based on the analysis period of July 2009 through June 2010:

Table 1: State of Building—Energy Usage Electric

Usage, kWh/yr

Gas Usage, therms/yr

Other fuel usage, gal/yr

Current Annual Cost of Energy, $

Site Energy Use Intensity, kBtu/sq ft yr

Joint Energy Consumption, MMBtu/yr

Current 466,593 81,806 N/A $199,758 95.4 9,773

Proposed 363,262 74,439 N/A $156,246 84.6 8,684

Savings 103,331 7,368 N/A $43,512* 10.8 1,089

% Savings 22% 9% N/A 22% 11% 11%

Proposed Solar PV

69,677 Includes SRECs $54,878 2.3 238

*Includes operation and maintenance savings

There may be energy procurement opportunities for the Glen Ridge Public Schools Ridgewood Avenue School to reduce annual electricity costs, which are $20,266 higher, when compared to the average estimated NJ commercial utility rates. Glen Ridge Board of Education should explore the option to participate in the NJSBA ACES program to cooperatively buy both electric and gas, like many other schools throughout New Jersey. SWA has also entered energy information about the Ridgewood Avenue School in the U.S. Environmental Protection Agency‘s (EPA) ENERGY STAR® Portfolio Manager energy benchmarking system. This high school is comprised of ―K-12 School‖ space type. The resulting score is 32, which indicates that the building performs better than 32% of similar buildings. Based on the current state of the building and its energy use, SWA recommends implementing various energy conservation measures from the savings detailed in Table 1. The measures are categorized by payback period in Table 2 below:

Table 2: Energy Conservation Measure Recommendations

ECMs First Year Savings ($) Simple Payback Period (years) Initial Investment, $ CO2 Savings, lbs/yr

0-5 Year $8,964 1.6 $13,912 64,886

5-10 Year $33,543 8.0 $267,191 192,458

>10 year $1,005 10.8 $10,874 8,890

Total $43,512 6.7 $291,977 266,234

Renewables $54,878 7.2 $394,450 124,757

SWA estimates that implementing the recommended ECMs is equivalent to removing approximately 22 cars from the roads each year or avoiding the need of 656 trees to absorb the annual CO2 generated.


Other recommendations to increase building efficiency pertaining to operations and maintenance and capital improvements are listed below:

Further Recommendations: SWA recommends that the Ridgewood Avenue School further explore the following:

Capital Improvements

Install NEMA premium motors when replacements are required

Replace old exhaust fans in kitchen and pump room with new high efficiency motors

Replace old Nesbitt steam unit heater in kitchen with new model

Insulate original and uninsulated roof sections

Replace all original, single-glazed windows with a low-E, double glazed type.

Disconnect and remove all abandoned equipment, abate asbestos and reuse components or recycle when possible

Operations and Maintenance

Relocate walk-in refrigerator condenser to the exterior to avoid heating the kitchen storage room

Apply water sealer to moldy/leaking, below-grade slab

Close isolation valves on all classroom steam radiators if there is a unit ventilator serving the same room

Perform annual service on each steam boiler as per manufacturer‘s recommendation.

Perform annual service on each vacuum pump system as per manufacturer‘s recommendation

Clean and maintain gutters, downspouts and downspout deflectors

Re-point deteriorated mortar joints soon to prevent possible water/moisture penetration into cavity walls

Repair damaged exterior mechanical penetrations and grills to prevent water seepage to building interior

Remove all sharp objects on flat roof sections to avoid damage to roof finish

Replace and maintain weather-stripping around all exterior doors and roof hatches.

Provide water-efficient fixtures and controls

SWA recommends that the building considers purchasing the most energy-efficient equipment, including ENERGY STAR® labeled appliances

Use smart power electric strips

Create an energy educational program The recommended ECMs and the list above are cost-effective energy efficiency measures and building upgrades that will reduce operating expenses for Glen Ridge Public Schools. Based on the requirements of the LGEA program, Glen Ridge Public Schools must commit to implementing some of these measures, and must submit paperwork to the Local Government Energy Audit program within one year of this report‘s approval to demonstrate that they have spent, net of other NJCEP incentives, at least 25% of the cost of the audit (per building). The minimum amount to be spent, net of other NJCEP incentives, is $4,295.75.


Financial Incentives and Other Program Opportunities The table below summarizes the recommended next steps that Glen Ridge Public Schools can take to achieve greater energy efficiency and reduce operating expenses. It includes the amount in dollars that Glen Ridge Public Schools is required to spend per building according to the LGEA program guidelines. It is important to note that the required 25% expenditure is per building and after the other implementation incentive amounts.

Table 3: Next Steps for the Ridgewood Avenue School

Energy Conservation Measures Available Incentives

ECM# 0-5 Year Payback ECMs

1 Install (119) new CFL lamps Direct Install

2 Install (3) Energy Vending Miser® devices Direct Install

3 Upgrade (14) Metal Halide fixtures to T5 fluorescent

fixtures Smart Start, Direct Install

4 Install (37) new LED exit signs Smart Start, Direct Install

5 Upgrade (22) Barber Coleman Sensors to

Programmable Thermostats None

5-10 Year Payback ECMs

6 Install (33) Pulse Start Metal Halide fixtures SmartStart, Direct Install

7 Upgrade BMS to include all Unit Ventilators None

8 Install 56.35 kW Rooftop Photovoltaic System Renewable Energy Incentive Program

9 Replace 3 Cast Iron Boilers with 2 New High

Efficiency Boilers SmartStart, Direct Install

10 Install (810) T8 fluorescent fixtures SmartStart, Direct Install

>10 Year Payback ECMs

11 Install (36) wall-mounted occupancy sensors SmartStart, Direct Install

12 Install (35) TRVs on Steam Radiators None

There are various incentive programs that the Glen Ridge Public Schools could apply for that could help lower the cost of installing the ECMs. For the Ridgewood Avenue School, and contingent upon available funding, SWA recommends the following incentive programs: New Jersey Clean Energy Pay for Performance – At this time, the project would not qualify for the Pay-for-Performance program with out intensive capital spending to improve source energy by at least 15%. Pay-for-Performance is not recommended for this building at this time. Direct Install 2010 Program: Commercial buildings with peak electric demand below 200kW can receive up to 60% of installed cost of energy saving upgrades. Glen Ridge Board of Education is exempt from this demand requirement if they apply for the EECBG grant before December 31, 2010. Smart Start: Majority of energy saving equipment and design measures have moderate incentives under this program.


Renewable Energy Incentive Program: Receive up to $0.75/Watt up to 30 kW toward installation cost for PV panels up to 50 kW in size, upon available funding. For each 1,000 kWh generated by renewable energy, receive a credit between $475 and $600. Utility Sponsored Programs: See available programs with PSE&G. http://www.pseg.com/ Please refer to Appendix F for further details.

http://www.pseg.com/


INTRODUCTION

Launched in 2008, the Local Government Energy Audit (LGEA) Program provides subsidized energy audits for municipal and local government-owned facilities, including offices, courtrooms, town halls, police and fire stations, sanitation buildings, transportation structures, schools and community centers. The Program will subsidize up to 100% of the cost of the audit. The Board of Public Utilities (BPUs) Office of Clean Energy has assigned TRC Energy Services to administer the Program. Steven Winter Associates, Inc. (SWA) is a 38-year-old architectural/engineering research and consulting firm, with specialized expertise in green technologies and procedures that improve the safety, performance, and cost effectiveness of buildings. SWA has a long-standing commitment to creating energy-efficient, cost-saving and resource-conserving buildings. As consultants on the built environment, SWA works closely with architects, developers, builders, and local, state, and federal agencies to develop and apply sustainable, ‗whole building‘ strategies in a wide variety of building types: commercial, residential, educational and institutional. SWA performed an energy audit and assessment for the Ridgewood Avenue School at 235 Ridgewood Avenue. The process of the audit included facility visits on August 10 and 11, 2010, benchmarking and energy bills analysis, assessment of existing conditions, energy modeling, energy conservation measures and other recommendations for improvements. The scope of work includes providing a summary of current building conditions, current operating costs, potential savings, and investment costs to achieve these savings. The facility description includes energy usage, occupancy profiles and current building systems along with a detailed inventory of building energy systems, recommendations for improvement and recommendations for energy purchasing and procurement strategies. The goal of this Local Government Energy Audit is to provide sufficient information to the Glen Ridge Public School Board of Education to make decisions regarding the implementation of the most appropriate and most cost-effective energy conservation measures for the Ridgewood Avenue School.


HISTORICAL ENERGY CONSUMPTION

Energy usage, load profile and cost analysis

SWA reviewed utility bills from July 2009 through June 2010 that were received from the utility companies supplying the Ridgewood Avenue School with electricity and natural gas. A 12 month period of analysis from July 2009 through June 2010 was used for all calculations and for purposes of benchmarking the building.

Electricity - The Ridgewood Avenue School is currently served by two electric meters. The Ridgewood Avenue School currently buys electricity from PSE&G at an average aggregated rate of $0.193/kWh. The Ridgewood Avenue School purchased approximately 466,593 kWh, or $90,255 worth of electricity, in the previous year. The average monthly demand was 172.0 kW and the annual peak demand was 246.5 kW. The chart below shows the monthly electric usage and costs. The dashed green line represents the approximate baseload or minimum electric usage required to operate the Ridgewood Avenue School. The usage is lowest in the summer when the occupancy is at a minimum and since most of the building does not have cooling.

Natural gas - The Ridgewood Avenue School is currently served by two meters for natural gas. The Ridgewood Avenue School currently buys natural gas from PSE&G through HESS who acts as a third party supplier at an average aggregated rate of $1.339/therm. The Ridgewood Avenue School purchased approximately 81,806 therms, or $109,503 worth of natural gas, in the previous year.

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The chart below shows the monthly natural gas usage and costs. The green line represents the approximate baseload or minimum natural gas usage required to operate the Ridgewood Avenue School. The gas usage peaks in the winter for heating and is negligible in the summer.

The chart above shows the monthly natural gas usage along with the heating degree days or HDD. Heating degree days is the difference of the average daily temperature and a base

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temperature, on a particular day. The heating degree days are zero for the days when the average temperature exceeds the base temperature. SWA‘s analysis used a base temperature of 65 degrees Fahrenheit. The following graphs, pie charts, and table show energy use for the building based on utility bills for the 12 month period. Note: electrical cost at $57/MMBtu of energy is more than 4 times as expensive as natural gas at $13/MMBtu

Annual Energy Consumption / Costs

MMBtu % MMBtu $ % $ $/MMBtu

Electric Miscellaneous 176 2% $9,970 5% 57

Electric For Cooling 51 1% $2,876 1% 57

Electric For Heating 266 3% $15,100 8% 57

Lighting 1,099 11% $62,310 31% 57

Domestic Hot Water (Gas) 447 5% $5,983 3% 13

Building Space Heating (Gas)

7,734 79% $103,521 52% 13

Totals 9,773 100% $199,759 100%

Total Electric Usage 1,592 16% $90,256 45% 57

Total Gas Usage 8,181 84% $109,503 55% 13

Totals 9,773 100% $199,759 100%

As noted in the above charts, Electric Miscellaneous represents electric loads that are not associated with heating or cooling loads. These miscellaneous loads are mostly associated with various plug-loads such as computers and other electronics. At this building, these loads are typically not monitored and computers are left on with only screensavers to conserve power.

Energy benchmarking

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SWA has entered energy information about the Ridgewood Avenue School in the U.S. Environmental Protection Agency‘s (EPA) ENERGY STAR® Portfolio Manager Energy benchmarking system. This Middle School facility is categorized as a ―K-12 School‖ space type, therefore the Ridgewood Avenue School is eligible to receive a national energy performance rating. The building Energy Performance Rating is 32, meaning that the building is in the 32nd percentile compared to similar buildings. The Site Energy Use Intensity is 95.4 kBtu/ft2-yr compared to the national average of a School building consuming 122.0 kBtu/ft2-yr. Although the Ridgewood Avenue School exceeds the national average SiEnergy Usage Intensity for K-12 schools, this may be attributed to the fact that less than 10% of the building spaces are cooled compared to schools which have cooling for the entire building. There are still ample opportunities to further reduce energy usage for the building.

Per the LGEA program requirements, SWA has assisted the Glen Ridge Public Schools to create an ENERGY STAR® Portfolio Manager account and share the Ridgewood Avenue School facilities information to allow future data to be added and tracked using the benchmarking tool. SWA has shared this Portfolio Manager account information with the Glen Ridge Public Schools (user name of ―GlenRidgeBOE‖ with a password of ―GLENRIDGEBOE‖) and TRC Energy Services (user name of ―TRC-LGEA‖). Tariff analysis

Tariff analysis can help determine if the building is paying the lowest rate possible for electric and gas service. Tariffs are typically assigned to buildings based on size and building type. Rate fluctuations are expected during periods of peak usage. Natural gas prices often increase during winter months since large volumes of natural gas is needed for heating equipment.

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Similarly, electricity prices often increase during the summer months when additional electricity is needed for cooling equipment. As part of the utility bill analysis, SWA evaluated the current utility rates and tariffs for the Glen Ridge Public Schools. The Ridgewood Avenue School is currently paying a general service rate for natural gas including fixed costs such as meter reading charges. The electric use for the building is direct-metered and purchased at a general service rate with an additional charge for electrical demand factored into each monthly bill. The general service rate is a market-rate based on electric usage and electric demand. Demand prices are reflected in the utility bills and can be verified by observing the price fluctuations throughout the year. Energy Procurement strategies

Billing analysis is conducted using an average aggregated rate that is estimated based on the total cost divided by the total energy usage for each utility over a 12 month period. Average aggregated rates do not separate demand charges from usage, and instead provide a metric of inclusive cost per unit of energy. Average aggregated rates are used in order to equitably compare building utility rates to average utility rates throughout the state of New Jersey. The average estimated NJ commercial utility rates for electric are $0.150/kWh, while Ridgewood Avenue School pays a rate of $0.193/kWh. The Ridgewood Avenue School annual electric utility costs are $20,266 higher, when compared to the average estimated NJ commercial utility rates. Electric bill analysis shows fluctuations up to 37% over the most recent 12 month period.


The average estimated NJ commercial utility rates for gas are $1.550/therm, while Ridgewood Avenue School pays a competitive rate of $1.339/therm. Natural gas bill analysis shows fluctuations up to 40% over the most recent 12 month period.

Utility rate fluctuations may be due to adjustments between estimated and actual meter readings or fixed meter costs during low usage. SWA recommends that the Ridgewood Avenue School further explore opportunities of purchasing both natural gas and electricity from third-party suppliers in order to reduce rate fluctuation and ultimately reduce the annual cost of energy for the Ridgewood Avenue School. Appendix C contains a complete list of third-party energy suppliers for the Glen Ridge Public Schools service area.


EXISTING FACILITY AND SYSTEMS DESCRIPTION This section gives an overview of the current state of the facility and systems. Please refer to the Proposed Further Recommendations section for recommendations for improvement. Based on visits from SWA on August 10 and 11, 2010, the following data was collected and analyzed.

Building Characteristics

The two-story (including a full basement), 102,436 square foot Ridgewood Avenue School Building was originally constructed in 1902 with additions/renovations in 1908, 1961 and 1993 and a major expansion in 1951. It houses a gymnasium, an auditorium, classrooms, lounges, office areas, student and staff bathrooms, a cafeteria, a kitchen, mechanical rooms and storage rooms.

Front Façade Right Side Façade

Rear Façade Left Side Façade


Wing

Building Occupancy Profiles

The building is occupied by approximately 568 students and 70 teachers and staff from 8:00am

to 5:00pm, and at least five to ten employees from 7:00am to 11:00pm, on weekdays during the

normal school year. The gymnasiums are occupied from 9:00am to 10:00pm on weekdays. The gymnasium and auditorium are used intermittently during the summer, but generally classrooms are not occupied during the summer session.

Building Envelope

Due to unfavorable weather conditions (min. 18 deg. F delta-T in/outside and no/low wind), no exterior envelope infrared (IR) images were taken during the field audit.

Exterior Walls

The original building exterior wall envelope is constructed of 8 inches of solid brick with no insulation and stucco accents around windows. The 1951 addition exterior wall is constructed of a 4‖ brick veneer over 8‖ concrete block. The brick was selected to match the existing facade. The interior is mostly painted CMU (Concrete Masonry Unit) and painted gypsum wallboard on the second floor. Note: Wall insulation levels could not be verified in the field and are based on reports from building management. Exterior and interior wall surfaces were inspected during the field audit. They were found to be in overall acceptable condition with only a few signs of uncontrolled moisture, air-leakage or other energy-compromising issues. The following specific exterior wall problem spots and areas were identified:


Clogged gutter downspout Signs of water damage at perimeter walls due to

missing/ineffective site drainage

Cracked/deteriorated bricks and mortar joints

Signs of water damage at perimeter walls due to missing/ineffective site drainage


Roof

The original sections of the roof are a medium-pitch gable type over a wood structure with a clay tile finish. The age of the roof is unknown, however it is assumed to be greater than 20 years old. The original attic has no visible insulation. The sections installed in 1951 have three inches of applied open-cell spray foam insulation between ceiling rafters, and two inches of foam board roof insulation. The 1951 additions consist of both flat and pitched roof areas. The pitched areas are medium-pitch gable type over a wood structure. Based on construction plans, there are ¼‖ cement asbestos board and 2‖ of batt insulation above the ceiling and no roof insulation. These areas are original. The other sections are flat and parapet type over steel decking with a built-up roof with a dark colored EPDM single membrane finish. There is no visible ceiling insulation but construction plans indicate that there is two inches of foil-faced foam board roof insulation. The flat sections were replaced approximately 15 years ago. Staff expressed concerns in maintaining the original clay tile roofing which is both expensive and difficult to maintain. There are rubber-type tiles which have a similar appearance and are easier to maintain. Note: Roof insulation levels could visually be verified in the field by non-destructive methods. Roofs, related flashing, gutters and downspouts were inspected during the field audit. They were reported to be in overall acceptable condition, with only a few signs of uncontrolled moisture, air-leakage or other energy-compromising issues. The following specific roof problem spots were identified:

Damaged grill due to vehicles Damaged cement wall guard


Exterior light visible from attic space in between clay tiles

Disconnected drain pipe on roof section above front entrance

No attic insulation found

No attic insulation found

The roofing material has reached the end of its useful lifespan

Rocks/nails or other sharp objects on roof surface


Base The original building‘s base is composed of a below-grade basement with a natural/gravel floor, with a small crawl space under wood joist, with a perimeter footing with poured concrete foundation walls and no detectable slab edge/perimeter insulation. The 1951 sections consist of a below-grade basement with a slab. Slab/perimeter insulation levels could not be verified in the field or on construction plans, and are based upon similar wall types and time of construction. The building‘s base and its perimeter were inspected for signs of uncontrolled moisture or water presence and other energy-compromising issues. Overall the base was reported to be in acceptable condition with only a few signs of uncontrolled moisture, air-leakage and/or other energy-compromising issues detected in some areas inside. The following specific base problem spots were identified:

Windows The building contains several different types of windows:

1. Over 100 large double-hung type windows with non-insulated painted metal frames, clear single glazing and interior roller shades. The windows are located throughout the building and were replaced at least 30 years ago.

2. Over 50 smaller double-hung type windows with non-insulated painted metal frames, clear single glazing and interior roller shades. The windows are located throughout the building and were replaced at least 30 years ago.

3. Over 30 double-hung type windows with insulated aluminum frames, low-E

coated/gas-filled, double glazing and interior roller shades. The windows are located on the wing section and were replaced at least 6 years ago.

Major signs of seepage through cracks detected in the slab


Windows, shading devices, sills, related flashing and caulking were inspected as far as accessibility allowed for signs of moisture, air-leakage and other energy compromising issues. Overall, the windows were found to be in poor condition with some signs of uncontrolled moisture, air-leakage and/or other energy-compromising issues. The following specific window problem spots were identified:

Exterior doors The building contains several different types of exterior doors:

1. Approximately 13 aluminum frame type double doors with insulated glass lights in each. They are located throughout the building and were replaced at least 15 years ago.

2. Three wood type exterior doors. They are located on the main floor and are original.

All exterior doors, thresholds, related flashing, caulking and weather-stripping were inspected for signs of moisture, air-leakage and other energy-compromising issues. Overall, the doors were found to be in acceptable condition with only a few signs of uncontrolled moisture, air-leakage and/ or other energy-compromising issues. The following specific door problem spots were identified:

Single-glazed window with ineffective frames


Building air-tightness Overall the field auditors found the building to be reasonably air-tight with a few areas of suggested improvements, as described in more detail earlier in this chapter. The air tightness of buildings helps maximize all other implemented energy measures and investments, and minimizes potentially costly long-term maintenance, repair and replacement expenses.

Exterior mold/water damage signs on areas around doors

Missing/worn weather-stripping


Mechanical Systems

Heating Ventilation Air Conditioning

The Ridgewood Avenue School is heated by steam which is used in several different types of equipment. There are a few isolated spaces which have cooling, but the vast majority of the building is only heated and ventilated. Due to the many phases of the building, there is not one comprehensive control system for the building. There are significant control issues and comfort issues as a result.

Equipment

All of the building heat is provided by three Weil McLain steam boilers sized for 5,485 MBH installed in 1989. The steam system was upgraded in the 1993 renovations. The boilers have a rated thermal efficiency of 80% and a rated combustion efficiency of 83%. On a weekly basis the boilers operate with a rotating lead-lag. Initially only one boiler operates, then as heating demand from the building increases, the boilers stage on one at a time and the lead boiler changes periodically so that all boilers are exercised. The three boiler flue pipes are connected to the same header without evidence of back draft dampers.

Weil McLain Steam Boilers; Combined Flue Piping

The boilers send steam to several different equipment types to heat the building. All classrooms have unit ventilators (UVs) with steam coil heat and some classrooms also have steam radiators. There are approximately 30 unit ventilators throughout the building. The unit ventilators are located in the rooms, using an outside air louver through the wall for fresh air, as well as an exhaust. The UVs contain steam coils as well as fans to disperse heat. The steam coil is above four squirrel-type fans which draw in outside air as well as room air from the bottom of the unit up through the steam coils and out the supply diffuser at the top of the unit. The heat is controlled by an automatic 2-way valve on the steam supply piping, and there is a float-thermostatic steam trap on the return piping to ensure that only condensate passes through to the return system. The UVs must be properly maintained and cleaned in order to ensure proper function and optimum heat exchange.


Unit Ventilator Exterior Grills; Steam Radiator within Enclosure

Installed throughout the building are steam radiators, mostly in hallways and stairwells. As noted, some classrooms have radiators in addition to the UVs. The radiator piping has a manual gate valve on the steam supply and a float-thermostatic steam trap on the condensate return piping. This ensures that no steam will enter the condensate piping. The manual control valves provide marginal adjustability.

Typical steam radiator arrangement

The Corbo Gymnasium is heated by two air handling units, SF-1 & SF-2 installed in 1972 each with automatic outside air dampers, supply fans, electric heaters and one shared exhaust fan. The supply fan motors were recently replaced, and none of the motors operate on VFDs. The air from the gym is drawn into the mixing box of both units by a common return fan. The outside air damper on each unit allows a prescribed amount of air into each unit based on outside air temperature and space temperature requirements. The return air splits between the two units using two motorized return air dampers. Then the supply fan of

Steam Supply

Return / Condensate

Isolation Valve

Float-Thermostatic Steam Trap


each unit draws the air through the filter section, steam coils and finally an electric pre-heater sized for 11.0 kW, before entering the space. Because the gymnasium is located at the opposite corner of the building from the boiler, the pre-heater is needed to avoid over stressing the steam system. Usually the heater is only needed for morning start-up during the winter and does not significantly contribute to the overall electric usage.

Gymnasium Air Handling Unit; Electric Duct Heater

The Beekman Gymnasium has a ceiling suspended air handling unit installed with Siemens controls in 1993. The unit uses a steam coil to heat the air and deliver to the gymnasium below. There are several steam unit heaters in hallways, vestibules and the maintenance shop for supplemental heating. All the steam unit heaters appear to be well beyond their useful life and should be replaced.

Steam Unit Heater

A few units have electric heat because they were recently added, and there was not spare steam capacity. The auditorium has four Carrier Energy Star packaged rooftop units installed in 2005, which are located on the roof directly above the space. Return air from the Auditorium mixes with fresh air, then the mixed air is heated or cooled and returns to the space. The units are each rated for 15 tons cooling and up to 50kW electric heat capacity, with an EER of 10.8.


In addition, several storage areas were converted to small classrooms and do not have steam piping, so electric unit ventilators were installed. The heaters use an electric heating element and squirrel-type fans to disperse heat.

Electric Unit Ventilator

There are several DX split units for cooling in the building, one for the maintenance shop, one for the guidance office, and two for the library. The evaporator sections are wall or ceiling mounted, and the condensing units are installed outside on the roof or in the courtyard.

Rooftop Condensing Unit, Typ., Library Ceiling Hung Evaporator

There is also a Carrier Weather maker installed in 1993 which provides cooling for the principal‘s office, nurse and main office.


Principal‘s Office Rooftop Unit

Ventilation is provided for the building through several means. Near the Beekman Gymnasium rooftop penthouse, there are three Dayton rooftop exhaust fans installed in 2004 and serve mechanical rooms and general classroom exhaust. The attic space contains five exhaust fans which serve bathrooms. There are 10 brick chimneys throughout the building which were used as coal vents before the building changed to gas boilers. Now two chimneys are used for the steam boiler flue and the others are used as exhaust fan shafts. In most cases two exhaust fans are tied to each chimney. The main courtyard has two wall mounted exhaust fans installed in 1993. There is also a large wall mounted exhaust fan serving the kitchen.

Attic Exhaust Fan leading to Chimney

The mechanical spaces have outside air dampers. When the steam boilers activate, the outside air damper automatically opens. In the domestic hot water room, there is a window exhaust fan which provides marginal ventilation while is constantly running. Access to fresh air is required by code in mechanical rooms with operating combustion equipment. There are over 10 natural ventilation diffusers on throughout the building. There are four large (4‘ X 3‘) ventilators serving the attic space. In general, the building exhaust fans were found to be in good mechanical condition


Rooftop Exhaust Fans serving mechanical rooms

Most classrooms have exhaust grills that lead to a ceiling exhaust plenum and eventually to rooftop exhaust fans.

Classroom exhaust diffuser and duct to exterior exhaust fan

Supplemental cooling for classrooms and teachers lounges is provided by window AC units of various manufacturers. There are approximately six window AC units throughout the building. Most of the units were installed between 2005 and 2008 and are in acceptable condition. The cafeteria has a walk-in commercial refrigerator which uses a split DX system. The evaporator section has two fans and is installed within the box, while the heat rejects at the condenser section which is installed inside the storage room adjacent to the walk-in refrigerator. Because heat accumulates in the space, an exhaust fan was installed in the storage space and runs continuously.


Walk-In Refrigerator Evaporator (left) and Condenser (right)

Exhaust fan installed in Storage Room

There are several abandoned units in the building. The back of the auditorium has two abandoned air handling units and the basement has several exhaust fans which are no longer used. These units should be removed.

Abandoned Auditorium AHU; Abandoned Ductwork, Basement


Asbestos piping once served abandoned AHU

Distribution Systems The steam from the Weil McLain boilers is circulated through implicit pressure of steam, throughout the radiation system. The steam system cycle operates as follows: condensate return and makeup water enter the boilers as water, then leave the boilers as steam at 15 PSI to serve the unit ventilators, radiators and steam coils. On the return side, the steam has condensed into high temperature condensate. The condensate return system for the Ridgewood Avenue School is a vacuum steam system, which consists of a tank and one or two sets of pumps. There were three such units found throughout the building. Using the vacuum traps and sloping of piping ensures that condensate and air does not accumulate in the system which can cause corrosion and water hammer. The vacuum system collects condensate and pumps air out of the system and while pumping condensate to the boiler feedwater tank.

Vacuum trap; Boiler Feed Water Tank and pumps

The feedwater tank collects condensate, excess low pressure steam and mixes with fresh makeup water. Then the mixture is pumped back to the boiler to be heated to steam.


Reference: http://www.hurstboiler.com/boilers/drawings/oxy_miser

Typical Boiler Feed Water Configuration

The cold makeup water is need because there are steam losses during the boiling process as well as distribution. The condensate is high quality water that is usually at a temperature that inhibits bacteria growth. The hotter the boiler feedwater, the less energy is needed to create steam. Therefore, a significant amount of thermal energy and water can be saved by returning the maximum amount of condensate to the feed water tank. Controls Building staff expressed an interest in a system-wide upgrade to a fully integrated Building Management System (BMS) which can be monitored from a single remote location on a computer interface. Most classrooms have adjustable thermostats which control automatic steam valves on Unit Ventilators for each room. Originally, the building operated on pneumatic control and this system was replaced in 1992 with a Barber Coleman electronic system including individual thermostats. The staff explained, however, that most classroom thermostats do not operate properly and only serve as a temperature sensor. Building management can only control space conditions by making adjustments to the boilers. All steam radiators throughout the building have manual control valves on the steam supply pipe and they are rarely adjusted. Portions of the building controls were upgraded intermittently over the past 10 years with Siemens controls. Approximately 25% of the original UVs were upgraded to Siemens controls, and 5 electric Unit Ventilators were added with Siemens controls with fan motor speed control local on the units. Approximately 75% of the steam UVs remain on the Barber Coleman control system, and users indicate that the system provides minimal control, if any, of the space conditions.

http://www.hurstboiler.com/boilers/drawings/oxy_miser


Steam Radiator Sensor; Barber Colman Controller for UV-5 through UV-18

Siemens thermostat

The building is partially controlled using through a Building Management System. Currently, the three stream boilers and four Auditorium air handing units are controllable and viewable through the computerize control system. The classroom conditions and Unit Ventilators are not tied into the computer system. The three Weil McLain steam boilers operate based on outside air temperature reset.

Auditorium Air Hander Controls


Boiler Control Panel; Current BMS Interface

The areas with DX cooling systems units have wall mounted controllers.

Library DX System Control

There is an opportunity to upgrade the controls for most of the heating equipment but programmable thermostats would need to be installed. Having the space conditions controlled from one location will improve the efficiency of the heating system and ensure occupant comfort with the least amount of labor.

Domestic Hot Water The domestic hot water for the Ridgewood School is provided by one AO Smith natural gas storage type heater with a back-draft damper, sized for 190 MBH. There is an abandoned AO Smith Lime Tamer unit installed next to the heater which should be isolated and removed. There are two domestic water return pumps, Bell & Gossett 1/6 HP, which were recently replaced.


Domestic Hot Water Heaters:

Original abandoned (Left) and new AO Smith (Right)

Electrical systems

Lighting See attached lighting schedule in Appendix B for a complete inventory of lighting throughout the building including estimated power consumption and proposed lighting recommendations. As of July 1, 2010 magnetic ballasts most commonly used for the operation of T12 lamps will no longer be produced for commercial and industrial applications. Also, many T12 lamps will be phased out of production starting July 2012. Interior Lighting - The Ridgewood Avenue School currently contains mostly T12 fixtures with sporadic use of T8, Metal Halide and Incandescent fixtures. Based on measurements of lighting levels for each space, there are no vastly over-illuminated areas.

Typical Classroom Lighting

Exit Lights - Exit signs were found to be incandescent 2-lamp type.


Incandescent Exit Sign

Exterior Lighting - The exterior lighting surveyed during the building audit was found to be a mix of Metal Halide lamp and CFL fixtures. Exterior lighting is mostly controlled by photocells, with some on timers. When the timers malfunction they are replaced with photocells.

Wall Mounted Metal Halides on photocell control

Appliances and process

SWA has conducted a general survey of larger, installed equipment. Appliances and other miscellaneous equipment account for a significant portion of electrical usage within the building. Typically, appliances are referred to as ―plug-load‖ equipment, since they are not inherent to the building‘s systems, but rather plug into an electrical outlet. Equipment such as process motors, computers, computer servers, refrigerators, vending machines, printers, etc. all create an electrical load on the building that is hard to separate out from the rest of the building‘s energy usage based on utility analysis. Elevators The Ridgewood Avenue School has a Dover elevator with a 20HP hydraulic pump installed in 1988.


Elevator hydraulic system

Other electrical systems There are not currently any other significant energy-impacting electrical systems installed at the Ridgewood Avenue School.


RENEWABLE AND DISTRIBUTED ENERGY MEASURES Renewable energy is defined as any power source generated from sources which are naturally replenished, such as sunlight, wind and geothermal. Technology for renewable energy is improving, and the cost of installation is decreasing, due to both demand and the availability of state and federal government-sponsored funding. Renewable energy reduces the need for using either electricity or fossil fuel, therefore lowering costs by reducing the amount of energy purchased from the utility company. Technology such as photovoltaic panels or wind turbines, use natural resources to generate electricity on the site. Geothermal systems offset the thermal loads in a building by using water stored in the ground as either a heat sink or heat source. Solar thermal collectors heat a specified volume of water, reducing the amount of energy required to heat water using building equipment. Cogeneration or CHP allows you to generate electricity locally, while also taking advantage of heat wasted during the generation process. Existing systems

Currently there are no renewable energy systems installed in the building.

Evaluated Systems Solar Photovoltaic Photovoltaic panels convert light energy received from the sun into a usable form of electricity. Panels can be connected into arrays and mounted directly onto building roofs, as well as installed onto built canopies over areas such as parking lots, building roofs or other open areas. Electricity generated from photovoltaic panels is generally sold back to the utility company through a net meter. Net-metering allows the utility to record the amount of electricity generated in order to pay credits to the consumer that can offset usage and demand costs on the electric bill. In addition to generation credits, there are incentives available called Solar Renewable Energy Credits (SRECs) that are subsidized by the state government. Specifically, the New Jersey State government pays a market-rate SREC to facilities that generate electricity in an effort to meet state-wide renewable energy requirements. Based on utility analysis and a study of roof conditions, the Ridgewood Avenue School is a good candidate for a 56.35 kW Solar Panel installation. See ECM for#8 details. Solar Thermal Collectors Solar thermal collectors are not cost-effective for this building and would not be recommended due to the insufficient and intermittent use of domestic hot water throughout the building to justify the expenditure.

Wind The Ridgewood Avenue School is not a good candidate for wind power generation due to insufficient wind conditions in this area of New Jersey. Geothermal The Ridgewood Avenue School is not a good candidate for geothermal installation since it would require replacement of the entire existing HVAC system, of which major components still have between 30% and 70% remaining useful life.


Combined Heat and Power The Ridgewood Avenue School is not a good candidate for CHP installation and would not be cost-effective due to the size and operations of the building. Typically, CHP is best suited for buildings with a high electrical baseload to accommodate the electricity generated, as well as a means for using waste heat generated. Typical applications include buildings with an absorption chiller, where waste heat would be used efficiently.


PROPOSED ENERGY CONSERVATION MEASURES Energy Conservation Measures (ECMs) are recommendations determined for the building based on improvements over current building conditions. ECMs have been determined for the building based on installed cost, as well as energy and cost-savings opportunities. Recommendations: Energy Conservation Measures

ECM# Description of Highly Recommended 0-5 Year Payback ECMs

1 Install (119) new CFL lamps

2 Install (3) Energy Vending Miser® devices

3 Upgrade (14) Metal Halide fixtures to T5 fluorescent fixtures

4 Install (37) new LED exit signs

5 Upgrade (22) Barber Coleman Sensors to Programmable Thermostats

Description of Recommended 5-10 Year Payback ECMs

6 Install (33) Pulse Start Metal Halide fixtures

7 Upgrade BMS to include all Unit Ventilators

8 Install 56.35 kW Rooftop Photovoltaic System

9 Replace 3 Cast Iron Boilers with 2 New High Efficiency Boilers

10 Install (810) T8 fluorescent fixtures

Description of Recommended >10 Year Payback ECMs

11 Install (36) wall-mounted occupancy sensors

12 Install (35) TRVs on Steam Radiators

In order to clearly present the overall energy opportunities for the building and ease the decision of which ECM to implement, SWA calculated each ECM independently and did not incorporate slight/potential overlaps between some of the listed ECMs (i.e. lighting change influence on heating/cooling.


ECM#1: Install (119) new CFL lamps The existing lighting consists of 119 inefficient incandescent lamps. SWA recommends that each incandescent lamp is replaced with a more efficient, Compact Fluorescent Lamp (CFL). CFLs are capable of providing equivalent or better light output while using less power when compared to incandescent, halogen and Metal Halide fixtures. CFL bulbs produce the same lumen output with less wattage than incandescent bulbs and last up to five times longer. The labor for the recommended installations is evaluated using prevailing electrical contractor wages. The building owner may decide to perform this work with in-house resources from the Maintenance Department on a scheduled, longer timeline than otherwise performed by a contractor Installation cost: Estimated installed cost: $1,117 (includes $621 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

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1 1,117 0 1,117 6,238 1.3 0 0.2 943 2,147 5 10,735 0.5 861 172 191 8,391 11,169

Assumptions: SWA calculated the savings for this measure using measurements taken the days of the field visits and using the billing analysis. SWA also assumed that 24 hrs/yr of labor will be avoided by installing lighting with longer lifespan. Rebates/financial incentives:

NJ Clean Energy – Direct Install program (up to 60% of the installed cost) Please see Appendix F for more information on Incentive Programs.


ECM#2: Install (3) Energy Vending Miser® devices There are several beverage vending machines and snack machines throughout the Middle School which are powered all year long. SWA found three beverage type and 1 snack type vending machines that are not Energy Star® rated and would benefit from the addition of a Vending Miser® device. Energy vending miser devices are now available for conserving energy used by beverage vending machines and coolers. There isn‘t a need to purchase new machines to reduce operating costs and greenhouse gas emissions. When equipped with the vending miser devices, refrigerated beverage vending machines use less energy and are comparable in daily energy performance to new ENERGY STAR® qualified machines. Vending miser devices incorporate innovative energy-saving technology into small plug-and-play devices that installs in minutes, either on the wall or on the vending machine. Vending miser devices use a Passive Infrared Sensor (PIR) to: Power down the machine when the surrounding area is vacant; Monitor the room's temperature; Automatically repower the cooling system at one- to three-hour intervals, independent of sales; Ensure the product stays cold. Snack vending miser devices can be used on snack vending machines to achieve maximum energy savings that result in reduced operating costs and decreased greenhouse gas emissions with existing machines. Snack vending miser devices also use a Passive Infrared Sensor (PIR) to determine if there is anyone within 25 feet of the machine. It waits for 15 minutes of vacancy, then powers down the machine. If a customer approaches the machine while powered down, the snacks vending miser will sense the presence and immediately power up. Installation cost: Estimated installed cost: $1,016 (includes $200 of labor) Source of cost estimate: www.usatech.com

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2 1,016 0 1,016 5,600 0.2 0 0.2 140 1,223 12 14,679 0.8 1,345 112 120 10,674 10,027

Assumptions: SWA calculated the savings for this measure using measurements taken during the field audit and using the billing analysis. SWA assumes energy savings based on modeling calculator found at www.usatech.com or http://www.usatech.com/energy_management/energy_calculator.php Rebates/financial incentives:

http://www.usatech.com/

http://www.usatech.com/energy_management/energy_calculator.php


NJ Clean Energy – Direct Install program (Up to 60% of installed cost) Please see Appendix F for more information on Incentive Programs.


ECM#3: Upgrade (14) Metal Halide fixtures to T5 fluorescent fixtures During the field audit, SWA completed a building interior as well as exterior lighting inventory (see Appendix B). The existing interior lighting in the gymnasium consists of 14 standard probe start Metal Halide (MH) lamps. SWA recommends replacing the interior higher wattage MH fixtures with 8-lamp T5 fixtures and electronic ballasts which offer the advantages of standard probe start MH lamps, but minimize the disadvantages. They produce higher light output both initially and over time, operate more efficiently, produce whiter light, and turn on and re-strike faster. Due to these characteristics, energy savings can be realized via one-to-one substitution of lower-wattage systems, or by taking advantage of higher light output and reducing the number of fixtures required in the space. The labor for the recommended installations is evaluated using prevailing electrical contractor wages. The building owner may decide to perform this work with in-house resources from the Maintenance Department on a scheduled, longer timeline than otherwise performed by a contractor. Installation cost: Estimated installed cost: $3,276 (includes $2,457 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

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3 3,500 224 3,276 8,140 1.7 0 0.3 635 2,206 15 33,084 1.5 910 61 67 21,975 14,574

Assumptions: SWA calculated the savings for this measure using measurements taken the days of the field visits and using the billing analysis. SWA also assumed a maintenance savings based on the reduced number of bulb replacements when compared to fixture lifetime. Rebates/financial incentives:

NJ Clean Energy - Metal Halide with pulse start ($16 per fixture) o Maximum Incentive Amount: $224.

NJ Clean Energy – Direct Install program (Up to 60% of the installed cost) Please see Appendix F for more information on Incentive Programs.


ECM#4: Install (37) new LED exit signs

During the field audit, SWA completed a building lighting inventory (see Appendix B). SWA observed that the building contains 37 incandescent exit signs. SWA recommends replacing these with LED type. Replacing existing exit signs with LED exit signs can result in lower kilowatt-hour consumption, as well as lower maintenance costs. Since exit signs operate 24 hours per day, they can consume large amounts of energy. In addition, older exit signs require frequent maintenance due to the short life span of the lamps that light them. LED Exit sign last at least 5 years. In addition, LED exit signs offer better fire code compliance because they are maintenance free in excess of 10 years. LED exit signs are usually brighter than comparable incandescent or fluorescent signs, and have a greater contrast with their background due to the monochromatic nature of the light that LEDs emit. The building owner may decide to perform this work with in-house resources from the Maintenance Department on a scheduled, longer timeline than otherwise performed by a contractor. Installation cost: Estimated installed cost: $4,829 (includes $3,445 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

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4 5,569 740 4,829 10,893 2.3 0 0.4 119 2,221 15 33,315 2.2 590 39 46 20,645 19,504

Assumptions: SWA calculated the savings for this measure using measurements taken the days of the field visits and using the billing analysis. SWA also assumed that 48 hrs/yr of labor will be avoided by installing lighting with longer lifespan. Rebates/financial incentives:

NJ Clean Energy – LED exit signs ($20 per fixture) o Maximum Incentive Amount: $740.



ECM#5: Upgrade (22) Barber Coleman Sensors to Programmable Thermostats During the field audit, SWA completed an HVAC controls analysis and observed 22 classrooms where temperature is manually controlled without setbacks. These classrooms each contained unit ventilators that were operated by Barber Coleman sensors. Programmable thermostats offer an easy way to save energy when correctly used. By turning the thermostat setback 8 to 10 degrees F for eight hours overnight, the heating bill can be reduced substantially (by a minimum of 10% per year). The savings from using a programmable thermostat is greater in milder climates than in more extreme climates. The labor for the recommended installations is evaluated using prevailing electrical contractor wages. The building owner may decide to perform this work with in-house resources from the Maintenance Department on a scheduled, longer timeline than otherwise performed by a contractor. The classroom unit ventilators have automatic control valves but do not have programmable thermostats for evening setbacks. The financial calculations below are for converting the 22 classroom Barber Coleman thermostats to a programmable type which can also be tied into a Building Management System. It is assumed that there will be evening setbacks for 8 hours a day for which the setpoint adjusts from 70 deg to 62 deg in the winter. Installation cost: Estimated installed cost: $3,674 (includes $1,406 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

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5 3,674 0 3,674 0 0.0 872 0.9 0 1,167 12 14,007 3.1 281 23 30 7,565 9,612

Assumptions: SWA calculated the savings for this measure assuming that 3% of the actual heating energy cost can be saved that is used by the 22 unit ventilators. Rebates/financial incentives:



ECM#6: Install (33) Pulse Start Metal Halide fixtures During the field audit, SWA completed a building interior as well as exterior lighting inventory (see Appendix B). The existing lighting contains 33 standard probe start Metal Halide (MH) lamps. SWA recommends replacing the higher wattage MH fixtures with pulse start MH lamps which offer the advantages of standard probe start MH lamps, but minimize the disadvantages. They produce higher light output both initially and over time, operate more efficiently, produce whiter light, and turn on and re-strike faster. Due to these characteristics, energy savings can be realized via one-to-one substitution of lower-wattage systems, or by taking advantage of higher light output and reducing the number of fixtures required in the space. The labor for the recommended installations is evaluated using prevailing electrical contractor wages. The building owner may decide to perform this work with in-house resources from the Maintenance Department on a scheduled, longer timeline than otherwise performed by a contractor. Installation cost: Estimated installed cost: $24,270 (includes $18,203 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

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6 24,095 825 24,270 13,684 2.9 0 0.5 1,601 4,242 15 63,630 5.7 162 11 15 24,851 24,501

Assumptions: SWA calculated the savings for this measure using measurements taken the days of the field visits and using the billing analysis. SWA assumes maintenance savings based Rebates/financial incentives:

NJ Clean Energy - Metal Halide with pulse start ($25 per fixture) o Maximum Incentive Amount: $825.



ECM#7: Upgrade BMS to include all Unit Ventilators A Building Management System already exists for the Ridgewood Avenue School and currently monitors the operation of the four auditorium rooftop units as well as the steam boilers. After the installation of programmable thermostats for the 22 unit ventilators as per ECM #3, the system can be further enhanced by integrating the thermostats to the existing BMS. The temperature of each classroom can be monitored on a remote computer system and the set points can be adjusted for all classrooms from a single location. Since the computer software is already set up for newer equipment, the data points can be readily added to the system. In addition to reducing labor cost, the enhanced control often increases occupant comfort. Installation cost: Estimated installed cost: $27,000 (includes $20,250 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

EC

M #

Est.

in

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lled

co

st, $

Est.

in

cen

tive

s,

$

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with ince

ntive

s, $

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h, 1

st yr

sa

vin

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kW

, de

man

d r

ed

uction

/mo

the

rms,

1st yr

sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

savin

gs

Est.

op

era

tin

g c

ost,

1st yr

sa

vin

gs, $

To

tal 1

st yr

sa

vin

gs,

$

Life

of

me

asu

re, yrs

Est.

life

tim

e e

ne

rgy c

ost

sa

vin

gs,

$

Sim

ple

payba

ck,

yrs

Life

tim

e r

etu

rn o

n inve

stm

en

t, %

an

nu

al re

turn

on

investm

en

t, %

Inte

rnal R

ate

of

Retu

rn, %

Net

Pre

se

nt

Valu

e, $

CO

2 re

du

ced

, lb

s/y

r

7 27,000 0 27,000 0 0.0 0.0 0.0 4,000 4,000 15 60,000 6.8 122 8 12 19,446 0

Assumptions: SWA calculated the savings for this measure assuming $1,000 per unit ventilator as well as a $5,000 premium. The labor savings is based $40/hour for on one hour a week of labor savings for 5 days a week for a 5 month heating season. Rebates/financial incentives:

None at this time. Please see Appendix F for more information on Incentive Programs.


ECM#8: Install 56.35 kW Rooftop Photovoltaic System

Currently, the building does not use any renewable energy systems. Renewable energy systems such as photovoltaic (PV) panels can be mounted on the building roof facing south which can offset a portion of the purchased electricity for the building. Power stations generally have two separate electrical charges: usage and demand. Usage is the amount of electricity in kilowatt-hours that a building uses from month to month. Demand is the amount of electrical power that a building uses at any given instance in a month period. During the summer periods, electric demand at a power station is high, due to the amount of air conditioners, lights, and other equipment being used within the region. Demand charges increase to offset the utility‘s cost to provide enough electricity at that given time. Photovoltaic systems offset the amount of electricity used by a building and help to reduce the building‘s electric demand, resulting in a higher cost savings. Installing a PV system will offset electric demand and reduce annual electric consumption, while utilizing available state incentives. PV systems are modular and readily allow for future expansions. The size of the system was determined considering the available roof surface area, without compromising service space for roof equipment and safety, as well as the facilities‘ annual base load and mode of operation. An analysis was conducted using a Solar Pathfinder shading tool which determines the amount of useable sunlight based on the shading and location of the building. A PV system could be installed on a portion of the roof with panels facing south as shown in the photo below. A commercial multi-crystalline 230 watt panel has 17.5 square feet of surface area (providing 13.1 watts per square foot). A 56.35 kW system needs approximately 245 panels which would take up 4,298 square feet.

Location for installing PV System


A PV system would reduce the building's electric load and allow more capacity for surrounding buildings as well as serve as an example of energy efficiency for the community. The building is not eligible for a residential 30% federal tax credit. The building owner may want to consider applying for a grant and / or engage a PV generator / leaser who would install the PV system and then sell the power at a reduced rate. Typically, a major utility provides the ability to buy SREC‘s at $600/MWh or best market offer. However, this option is not available from the local utility. Please see below for more information. Installation cost: Estimated installed cost: $394,450 (includes $225,400 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

EC

M #

Est.

in

sta

lled

co

st, $

Est.

in

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tive

s,

$

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t e

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co

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ntive

s, $

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h, 1

st yr

sa

vin

gs

kW

, de

man

d r

ed

uction

/mo

the

rms,

1st yr

sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

savin

gs

Est.

op

era

tin

g c

ost,

1st yr

sa

vin

gs, $

To

tal 1

st yr

sa

vin

gs,

$

Life

of

me

asu

re, yrs

Est.

life

tim

e e

ne

rgy c

ost

sa

vin

gs,

$

Sim

ple

payba

ck,

yrs

Life

tim

e r

etu

rn o

n inve

stm

en

t, %

an

nu

al re

turn

on

investm

en

t, %

Inte

rnal R

ate

of

Retu

rn, %

Net

Pre

se

nt

Valu

e, $

CO

2 re

du

ced

, lb

s/y

r

8 394,450 0 394,450 69,677 56.4 0.0 2.3 0 54,878 25 1,371,951 7.2 248 10 12 312,263 124,757

Assumptions: SWA estimated the cost and savings of the system based on past PV projects. SWA projected physical dimensions based on a typical Polycrystalline Solar Panel (230 Watts, Model ND-U23-C1). PV systems are sized based on 24,150 Watts and physical dimensions for an array will differ with the efficiency of a given solar panel (W/sq ft). Rebates/financial incentives:

NJ Clean Energy - Renewable Energy Incentive Program, Incentive based on $0.75/watt Solar PV application for systems 30.0 kW or less.

NJ Clean Energy - Solar Renewable Energy Certificate Program. Each time a solar electric system generates 1,000kWh (1MWh) of electricity, a SREC is issued which can then be sold or traded separately from the power. The buildings must also become net-metered in order to earn SRECs as well as sell power back to the electric grid. A total of $41,400/year, based on $600/SREC, has been incorporated in the above costs for a period of 15 years; however it requires proof of performance, application approval and negotiations with the utility.

Please see Appendix F for more information on Incentive Programs.


ECM#9: Replace 3 Cast Iron Boilers with 2 New High Efficiency Boilers The main heating source for the Ridgewood Avenue School is three Weil McLain steam boilers, which were installed in 1989. The boilers are now over 20 years old and are approaching the end of their useful life. SWA recommends the replacement of existing old and inefficient boilers. The installed boilers each have an input capacity of 5,485 MBH in and 4,370 MBH out, for a rated efficiency of 80%. Due to the age of the units however, the current efficiency is estimated to be 75% thermal efficiency for an estimated output of 4,113 MBH. A conservative benchmark heating capacity for a school building in New Jersey is 30 Btu/hr/sqft. For the 102,436 sqft facility, the estimated heating capacity should therefore be approximately 3,100 MBH. The installed boilers currently have an estimated capacity of 4,000 MBH each, for a total of 12,341 MBH. Based on billing analysis the estimated gas heating usage is 8,180 MMBtu, and for an estimated 2,340 full load heating hours, the annual full-load usage was 3,496 MBH, which takes into account all efficiency losses. Based on usage and benchmark analysis this indicates that the steam system is largely oversized. The peak boiler efficiency occurs at the design load and operating at low load can reduce efficiency by 5% to 10%. SWA therefore recommends that the three Weil McLain cast iron steam boilers be replaced by two Cast Iron Steam Boilers with at least a 5 to 1 turn down ratio, and a minimum of 83% rated thermal efficiency, with a heating capacity more appropriately sized for the existing system. A licensed engineer can determine the appropriate size boilers based on an in-depth heating system analysis. The cost savings shows the cost analysis for replacing the boilers in kind compared to replacing the existing boilers with two Cast Iron Steam Boilers sized for 2,500 MBH each with 5 to 1 turndown for increased part load efficiency. Installation cost: Estimated installed cost: $72,000 (includes $15,600 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

EC

M #

Est.

in

sta

lled

co

st, $

Est.

in

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s,

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with ince

ntive

s, $

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h, 1

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sa

vin

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kW

, de

man

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uction

/mo

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sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

savin

gs

Est.

op

era

tin

g c

ost,

1st yr

sa

vin

gs, $

To

tal 1

st yr

sa

vin

gs,

$

Life

of

me

asu

re, yrs

Est.

life

tim

e e

ne

rgy c

ost

sa

vin

gs,

$

Sim

ple

payba

ck,

yrs

Life

tim

e r

etu

rn o

n inve

stm

en

t, %

an

nu

al re

turn

on

investm

en

t, %

Inte

rnal R

ate

of

Retu

rn, %

Net

Pre

se

nt

Valu

e, $

CO

2 re

du

ced

, lb

s/y

r

9a 411,900 0 411,900 0 0.0 3,867 3.8 960 6,136 25 153,401 67.1 -63 -3 -6 -297,863 42,624

9 77,000 5,000 72,000 0 0.0 6,187 6.0 1,440 9,722 25 243,041 7.4 238 10 13 90,672 68,199

*9a represents replacing boilers in-kind with 3 identical boilers **9 represents total savings when replacing with two correctly-sized high efficiency boilers (recommended)


Assumptions: SWA calculated the savings for this measure assuming a savings of 8% of the total heating energy based on efficiency improvement as well as 36 hours of labor cost savings. Rebates/financial incentives:

NJ Clean Energy – Gas Heating Boilers >83% Efficiency - $1/MBH - $5,000 total



ECM#10: Install (810) T8 fluorescent fixtures

Most of the existing lighting consists of inefficient T12 fluorescent fixtures with magnetic ballasts. SWA recommends replacing each of the 810 T12 fixtures with more efficient, T8 fluorescent fixtures with electronic ballasts. T8 fixtures with electronic ballasts provide equivalent or better light output while reducing energy consumption by 30% when compared to T12 fixtures with magnetic ballasts. T8 fixtures also provide better lumens for less wattage when compared to incandescent, halogen and Metal Halide fixtures. The labor for the recommended installations is evaluated using prevailing electrical contractor wages. The building owner may decide to perform this work with in-house resources from the Maintenance Department on a scheduled, longer timeline than otherwise performed by a contractor. Installation cost: Estimated installed cost: 143,921 (includes $100,745 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

EC

M #

Est.

in

sta

lled

co

st, $

Est.

in

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$

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ntive

s, $

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h, 1

st yr

sa

vin

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kW

, de

man

d r

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uction

/mo

the

rms,

1st yr

sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

savin

gs

Est.

op

era

tin

g c

ost,

1st yr

sa

vin

gs, $

To

tal 1

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sa

vin

gs,

$

Life

of

me

asu

re, yrs

Est.

life

tim

e e

ne

rgy c

ost

sa

vin

gs,

$

Sim

ple

payba

ck,

yrs

Life

tim

e r

etu

rn o

n inve

stm

en

t, %

an

nu

al re

turn

on

investm

en

t, %

Inte

rnal R

ate

of

Retu

rn, %

Net

Pre

se

nt

Valu

e, $

CO

2 re

du

ced

, lb

s/y

r

10 156,071 12,150 143,921 55,715 11.6 0 1.9 4,826 15,579 15 233,691 9.2 62 4 7 38,181 99,758

Assumptions: SWA calculated the savings for this measure using measurements taken the days of the field visits and using the billing analysis. SWA assumes maintenance savings based on reduced number of bulb replacements over the lifetime of the replacement fixtures. Rebates/financial incentives:

NJ Clean Energy – T12 to T8 - $15/fixture o Maximum Available Incentive: $12,150.



ECM#11: Install (36) wall-mounted occupancy sensors During the field audit, SWA completed a building lighting inventory (see Appendix B). SWA observed that the existing lighting has minimal to no control via occupancy sensors. SWA identified 36 locations that can benefit from the installation of occupancy sensors. SWA recommends installing occupancy sensors in areas that are occupied only part of the day and the payback on savings is justified. Typically, occupancy sensors have an adjustable time delay that shuts down the lights automatically if no motion is detected within a set time period. Advance micro-phonic lighting sensors include sound detection as a means to control lighting operation. The labor for the recommended installations is evaluated using prevailing electrical contractor wages. The building owner may decide to perform this work with in-house resources from the Maintenance Department on a scheduled, longer timeline than otherwise performed by a contractor. Installation cost: Estimated installed cost: $7,200 (includes $4,320 of labor) Source of cost estimate: RS Means; Published and established costs, NJ Clean Energy Program

EC

M #

Est.

in

sta

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co

st, $

Est.

in

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$

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s, $

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h, 1

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sa

vin

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, de

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uction

/mo

the

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1st yr

sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

savin

gs

Est.

op

era

tin

g c

ost,

1st yr

sa

vin

gs, $

To

tal 1

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sa

vin

gs,

$

Life

of

me

asu

re, yrs

Est.

life

tim

e e

ne

rgy c

ost

sa

vin

gs,

$

Sim

ple

payba

ck,

yrs

Life

tim

e r

etu

rn o

n inve

stm

en

t, %

an

nu

al re

turn

on

investm

en

t, %

Inte

rnal R

ate

of

Retu

rn, %

Net

Pre

se

nt

Valu

e, $

CO

2 re

du

ced

, lb

s/y

r

11 7,920 720 7,200 3,061 0.6 0 0.1 0 591 15 8,861 12.2 23 2 3 -241 5,480

Assumptions: SWA calculated the savings for this measure using measurements taken the days of the field visits and using the billing analysis. SWA assumes occupancy hours based on verified information from building staff. Rebates/financial incentives:

NJ Clean Energy - Wall Mounted occupancy sensors ($20 per control) o Maximum Incentive Amount: $720



ECM#12: Install (35) TRVs on Steam Radiators

The Ridgewood Avenue School has steam radiators installed throughout the building. Most of the radiators are over 30 years old and have poor controllability. Thermostatic radiators valves, TRV's, are a simple, low cost, and effective method of controlling steam radiator heating. TRV's regulate the amount of steam through the radiator by controlling the venting of air. The valve is self-regualting, and consists of a valve and a sensor. As the space conditions change, the valve will respond to maintain the temperature set point. This avoids having to open windows to compensate for over-heating the space. The TRVs can be manually adjusted at the valve itself, or by a remote thermostat. Given that the radiators are installed throughout the building it is not practical to install remote thermostats for each one, and the temperature set point should be relatively consistent during each season. Typically the valves have a set point range of 41˚F to 78.8˚F, but can be limited to a smaller range through a minor adjustment. Therefore SWA recommends installing manual TRV valves on the steam supply for each radiator. It is estimated that there are 35 steam radiators installed throughout the building in hallways and stairwells. This control upgrade would only be effective if the steam traps are operating properly and therefore the float-thermostatic steam straps on each radiator should be serviced before the TRVs are installed. Installation cost: Estimated installed cost: $3,674 (includes $1,765 of labor) Source of cost estimate: RS Means; Published and established costs

EC

M #

Est.

in

sta

lled

co

st, $

Est.

in

cen

tive

s,

$

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co

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with ince

ntive

s, $

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h, 1

st yr

sa

vin

gs

kW

, de

man

d r

ed

uction

/mo

the

rms,

1st yr

sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

savin

gs

Est.

op

era

tin

g c

ost,

1st yr

sa

vin

gs, $

To

tal 1

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sa

vin

gs,

$

Life

of

me

asu

re, yrs

Est.

life

tim

e e

ne

rgy c

ost

sa

vin

gs,

$

Sim

ple

payba

ck,

yrs

Life

tim

e r

etu

rn o

n inve

stm

en

t, %

an

nu

al re

turn

on

investm

en

t, %

Inte

rnal R

ate

of

Retu

rn, %

Net

Pre

se

nt

Valu

e, $

CO

2 re

du

ced

, lb

s/y

r

12 5,250 0 3,674 0 0.0 309 0.3 0 414 20 8,282 12.7 58 3 5 773 3,410

Assumptions: SWA calculated the savings for this measure assuming that hallways and stairwells have a total of 35 steam radiators sections, and therefore 35 TRVs are needed. It is also assumed that 2% of the heating cost can be saved by installing TRVs and the steam radiators represent 20% of the total heating load. Rebates/financial incentives:

None at this time


Please see Appendix F for more information on Incentive Programs.


PROPOSED FURTHER RECOMMENDATIONS

Capital Improvements Capital Improvements are recommendations for the building that may not be cost-effective at the current time, but that could yield a significant long-term payback. These recommendations should typically be considered as part of a long-term capital improvement plan. Capital improvements should be considered if additional funds are made available, or if the installed costs can be shared with other improvements, such as major building renovations. SWA recommends the following capital improvements for the Ridgewood Avenue School:

Upgrade windows - SWA recommends that Glen Ridge Board of Education upgrade all windows to double-pane, argon-filled windows with a low-e coating, frame insulation and a thermal break. At this time, this measure would not be cost-effective but should be considered as a capital improvement or if there is an opportunity for additional funding through energy conservation block grants.

Upgrade roof insulation – SWA recommends that Glen Ridge Board of Education upgrade all insulation at the roof level to a minimum of R-30 and wall insulation is increased to recent energy code minimums. When the building was constructed, energy code minimums did not require insulation levels as stringent as recent energy code. Should the school choose to upgrade the roof, recent energy code minimums should be followed. Increasing the level of insulation will result in a more thermal comfort as well as energy savings associated with reducing the amount of insulation through the roof. At this time, this measure would not be cost-effective but should be considered as a capital improvement or if there is an opportunity for additional funding through energy conservation block grants. Based on typical cost estimating practices using RS Means Construction Cost books, to upgrade the insulation of the entire school which would essentially be to replace the entire roof would cost in the ballpark of $803,000 or $7.84 per sqft of roof area.

Install NEMA premium motors when replacements are required - Select NEMA Premium motors when replacing motors that have reached the end of their useful operating lives.

Replace old exhaust fans in kitchen and pump room with new using NEMA premium efficiency motors and install controls to initiate fans only when needed based on temperature, or equipment operation. Approximate cost of $980 per fan, including $200 labor. Typically replacing fans with fractional horsepower has a payback in excess of 20 years.

Replace old Nesbitt steam unit heater in kitchen with new model. Approximate cost is $575 including $115 labor.

Insulate original and uninsulated roof/ sections. SWA suggests applying a waterproofing membrane as well as rigid foam board insulation (R-30 min.) under wooden truss. Approximate installed cost of $400/sqft, (including 30% labor cost).

Replace all original, single-glazed windows with a low-E, double glazed type. Approximate cost is $18/sqft of glass including $7/sqft labor cost.

Remove air handling unit in basement, abate asbestos insulation on piping as it is a possible hazard to maintenance staff.


Operations and Maintenance Operations and Maintenance measures consist of low/no cost measures that are within the capability of the current building staff to handle. These measures typically require little investment, and they yield a short payback period. These measures may address equipment settings or staff operations that, when addressed will reduce energy consumption or costs.

Install occupancy-based power strips or power management software for computers – The Ridgewood Avenue School contains computers and other electronic devices that consume a significant amount of power. Typically, computers are left on for extended periods of time such as during nights, weekends and holiday breaks with only screensavers to power down the screens. SWA recommends that the school deploy either a power management software that can be programmed to automatically shutdown computers or install occupancy based power strips. New SmartStrips are power strips that contain an occupancy sensor to automatically shutdown computers if no motion is detected within a set period of time.

Relocate walk-in refrigerator condenser to the exterior to avoid heating the kitchen storage room. The refrigerator was installed along an exterior wall and therefore it would be simple to make a small penetration in the wall for refrigerant piping to the exterior. The condenser must have a waterproof enclosure. The storage room exhaust fan can then be removed from the room and possibly used in a different area.

Apply water sealer to moldy/leaking, below-grade slab.

Close isolation valves on all classroom steam radiators if there is a unit ventilator serving the same room. The estimated heating capacity of each unit ventilator is between 50,000 and 90,000 Btu/hr. This is more than enough heating capacity for the typical classroom. The steam radiators are all manually controlled and therefore are not easily regulated. The radiators can be left in place in case of a failure with the unit ventilators, but the steam supply valve should be normally closed.

Perform annual service on each steam boiler as per manufacturer‘s recommendation. Approximate cost of $800/year for each boiler.

Perform cleaning and maintenance service on all steam boilers, steam traps and vacuum traps.

Perform annual service on each vacuum pump system as per manufacturer‘s recommendation. Approximate cost of $60/year for each vacuum unit.

Clean and maintain gutters, downspouts and downspout deflectors to minimize uncontrolled roof water run-off causing exterior wall damage.

Re-point deteriorated mortar joints soon to prevent possible water/moisture penetration into cavity walls.

Repair damaged exterior mechanical penetrations and grills to prevent water seepage to building interior.

Remove all sharp objects on flat roof sections to avoid damage to roof finish.


Disconnect and remove all abandoned equipment and reuse components or recycle when possible.

Replace and maintain weather-stripping around all exterior doors and roof hatches.

Provide water-efficient fixtures and controls - Adding controlled on/off timers on all lavatory faucets is a cost-effective way to reduce domestic hot water demand and save water. Building staff can also easily install faucet aerators and/or low-flow fixtures to reduce water consumption. There are many retrofit options, which can be installed now or incorporated as equipment is replaced. Routine maintenance practices that identify and quickly address water leaks are a low-cost way to save water and energy. Retrofitting with more efficient water-consumption fixtures/appliances will reduce energy consumption for water heating, while also decreasing water/sewer bills.

SWA recommends that the building considers purchasing the most energy-efficient equipment, including ENERGY STAR® labeled appliances, when equipment is installed or replaced. More information can be found in the ―Products‖ section of the ENERGY STAR® website at: http://www.energystar.gov.

Use smart power electric strips - in conjunction with occupancy sensors to power down computer equipment when left unattended for extended periods of time.

Create an energy educational program - that teaches how to minimize energy use. The U.S. Department of Energy offers free information for hosting energy efficiency educational programs

and plans. For more information please visit: http://www1.eere.energy.gov/education/. Note: The recommended ECMs and the list above are cost-effective energy efficiency measures and building upgrades that will reduce operating expenses for Glen Ridge Public Schools. Based on the requirements of the LGEA program, Glen Ridge Public Schools must commit to implementing some of these measures, and must submit paperwork to the Local Government Energy Audit program within one year of this report‘s approval to demonstrate that they have spent, net of other NJCEP incentives, at least 25% of the cost of the audit (per building). The minimum amount to be spent, net of other NJCEP incentives, is $4,295.75.

http://www.energystar.gov/

http://www1.eere.energy.gov/education/


APPENDIX A: EQUIPMENT LIST Inventory

Building System

Description Model # Fuel Location Space Served Date

Installed

Estimated Remaining Useful Life

%

Controls

Original - Pneumatics - no longer used, Barber

Coleman installed 1992, Siemens partial

upgrade 2000

Barber Coleman & Siemens

Electric All Areas All Areas 1992/2000 50%

Cooling Dx Spilt Unit, 2 ceiling

hung evaporator sections

Mitsubishi Mr.Slim,

M#PU42EK2, Electric

Courtyard/ Library

Library 1993 15%

Cooling

Five (5) Window AC units R-22, 8,000 Btu to 12,000 Btu Cooling,

10.8 EER, 740 W

General Electric, Frigidaire

Electric Small

Classrooms Small

Classrooms 2005 to

2008 75%

Cooling

Rooftop Cooling Unit, R-22, 3/4 HP,

Evaporator Unit: 3,000 CFM, 1.5 HP Moto, 91

MBH, 65.5 MBH Sensible

Carrier Weathermaker, M#38AK008500 S#2793G15700

Electric Roof Above

Front Entrance/ Rm 203

Principal Office 1993 15%

Cooling Split Dx Unit

Condenser, R-410A, 33.1 MBH Cooling,

Fujitsu M#AOU36CLX, S#EBN 010724/

Indoor Unit: ASU36CLX,

S#EBA011302

Electric Rooftop Maintenance

Shop 2000 50%

Cooling Wall Mounted 18,000

Btu/hr cooling, R-410A

Fujitsu Outdoor: AOU18CL,

S#DCN003544, M#ASU18CL,

S#DCA002513

Electric Courtyard/Guid

ance Office Guidance

Office 2000 50%

Domestic Hot Water

Abandoned Hot water Heater - 199 MBH, 84

Gal

Lime Tamer AO Smith, M# BTR-

199 880

Natural Gas

Pump Room All areas 1980 0%

Domestic Hot Water

Hot Water Heater - 190 MBH in, 184

Gal/Hr Recovery Rate with backdraft damper

AO Smith, M# BTR-199 110,

S#MJ02-1923151-110

Natural Gas

Pump Room All areas 2002 60%

Domestic Hot Water

Two (2) Circulating Pumps, 1/6 HP, 1725

RPM, Bell & Gossett Electric Pump Room All areas 2009 95%

Elevator Dover Elevator,

Hydraulic Motor, 20 HP, 3510 RPM,

Dover M#E51795

Motor: General Electric,

M#5K1215AL7F2, Frame 215T

Electric Basement All Areas 1988 30%


Building System


Installed


%

Heating

Cast Iron Steam Boiler #1- 5,485 MBH in, 4,370 MBH out , 80% thermal Eff. 14,138 sqft Steam, Operates based on OA

reset

Weil McClain Burner #

AE725595 M#WR10.2-G-30,

Boiler M#BG-1788W

Natural Gas

Boiler Rm All areas 1989 0%

Heating

Cast Iron Steam Boiler #2- 5,485 MBH in, 4,370 MBH out , 80% thermal Eff. 14,138 sqft Steam


AE725595 M#WR10.2-G-30,

Boiler M#BG-13684

Natural Gas


Heating

Cast Iron Steam Boiler #3- 5,485 MBH in, 4,370 MBH out , 80% thermal Eff. 14,138 sqft Steam


AE725595 M#WR10.2-G-30,

Boiler M#BG-13684

Natural Gas


Heating Ceiling Hung Steam Unit

Heater, Size 74H Trane, S#361-60-

60308 Steam

Mechanical Penthouse


1993 15%

Heating

Five Electric Unit Ventilator, Two 15 kW heater, Two 1/6 HP fan motor, with fan speed

control

M#F.TSH.2.S08, P#E803815010

Electric Small

Classrooms Small

Classrooms 2006 80%

Heating Gym Heating Only Air

Handling Unit, 461 Mbh, 7,000 CFM

Trane Steam Beckman Gym Beckman Gym 1993 15%

Heating

Over 30 Steam Unit Ventilators – wall

mounted or ceiling mounted, 4 fans, 1/8 HP each, 1000 cfm to 1250

cfm, 50 to 90 MBH capacity

Nesbit Electric/ste

am Classrooms Classrooms 1990 0%

Heating SF-1 & 2 Heating and

Ventilation Air Handling Unit

Trane Climate Changer, Type, 12,

S#245852 Steam


Corbo Gym 1993 15%

Heating SF-1 Supply Fan Motor, 3.0HP, 86.5% NEMA Eff.

M# DT4084038012,

Dayton Motor M#2N983G,

Electric Mechanical Penthouse

Corbo Gym 2010 100%

Heating SF-2 Supply Fan Motor,

3.0 HP, 1445 RPM AO Smith Motor,

S#1-6 Electric


Corbo Gym 1993 15%

Heating Steam Unit Heater

Ceiling Hung - very old Nesbit Steam Kitchen Kitchen 1950 0%


Building System


Installed


%

Heating Three (3) Condensate Pumps, 3/4 HP, 3450

RPM

Marathon P#M99131,

M#6QK56C34D5511D

Electric Pump Room All areas 1990 0%

Heating Two (2) Steam Trap Pump, 1.5HP, 1725

ROM,

General Electric M#5K49QG9120

Electric Pump Room All areas 1990 0%

Heating

Vacuum Return Line Heating Pump, 20,000 Lbs, Two (2) Pump 1.5

HP, 3430 RPM

S#97311 Marathon Motor: S-2774RA,

M#5VC56T34D5993A

Electric Auditorium Penthouse

All Areas 1998 40%

Heating SF-1 Electric Duct Heater

installed within supply branch, 11.0kW

Raywall M#3HF15, SR#459850835


Corbo Gym 2008 90%

Heating SF-2 Electric Duct Heater

installed within supply branch, 11.0kW

Raywall M#3HF15, SR#459850836


Corbo Gym 2008 90%

Heating

Shared Exhaust Air Fan for SF-1 & SF-2 , 2.0 HP,

1740RPM, ODP Encl. 85.5% NEMA Eff.

Trane Climate Changer, M#21,

S#245586, SO#14-1189A, Dayton Motor, 4LXD6G


Corbo Gym 1980/ 2010

50%

Heating Steam Boiler Chimney Flue Positive Pressure

Chimney System

Metal-Fab, inc. Cat No#20P123I28

NA Boiler Rm Boiler 1989 0%

Heating/Cooling

Rooftop Units, Supply Fan 5.0 HP, (3) OA fans,

0.5 HP each

Carrier Weathermaker, M#50HJ-017---

6B1AA, S#3706U23138,

Electric Roof

Auditorium Auditorium 2004 70%

Heating/Cooling

Packaged Rooftop Units, 15 Tons cooling with R-22, 25 to 50 kW electric 2-stage heating, Supply Fan 5.0 HP, (3) OA fans,

0.5 HP each


6B1AA, S#3706U23137

Electric Roof


Heating/Cooling


0.5 HP each


6B1AA, S#3706U23136

Electric Roof


Heating/Cooling


0.5 HP each


6B1AA, S#3706U23139

Electric Roof


Refrigeration

Walk-in Refrigerator Cooler, Two (2) 1/15 HP

fans, 7,200 Btu/hr

HeatCraft M#LCA672AB, S#D08D10004

Electric Kitchen Kitchen 1980 0%


Building System


Installed


%

Refrigeration

Walk-In Refrigerator Exhaust Fan

Fantech, M#FX6 Electric Kitchen Pantry

Walk-In refrigerator

1980 0%

Ventilation EF-22 Exhauast Fan, 100

CFM, 1/28 HP Centri- Master Electric

Courtyard through wall

Toilets 1993 15%

Ventilation EF-24, 2680 RPM,

1/4HP, tied to Chimney Carnes Electric Rooftop Beckman Gym 1993 15%

Ventilation EF-26, 2140 RPM,

3/4HP, tied to Chimney

Magnetek Centrury Motor, Cat# H581,

S#BL7-294 Electric Attic Classrooms 1993 15%

Ventilation EF-27 1470 RPM, 1.0HP, Centri-Master M#QBR161T

Electric Attic Classrooms/To

ilets 1993 15%

Ventilation EF-28, 730 CFM, 1/2 HP Carnes Electric Roofop Library 1993 15%

Ventilation EF-29, 800 RPM, 1/3HP,

tied to Chimney Carnes Electric Attic Classrooms 1993 15%

Ventilation EF-30, 3100 RPM, 1.5 HP, tied to Chimney

Carnes Electric Attic Classrooms/To

ilets 1993 15%

Ventilation EF-31 1264 RPM, 3/4HP, Centri-Master M#XB161H,

S#VFD218314 Electric Attic

Classrooms/Toilets

1993 15%

Ventilation

EF-33, Kitchen Exhaust Fan - Switch Operated 1/2HP, 760 RPM, 2300

CFM

Centri Master M#PWB200G, S#

VRD218316 Electric Kitchen Kitchen 1993 15%

Ventilation

Exhaust Fan - Switch Controlled - nameplate

not accessible - appears old

NA Electric Pump Room Pump Room 1990 0%

Ventilation Exhaust Fan, EF-25, 1/2

HP, 1380 RPM Centri- Master M#PNN1636

Electric Roof Classrooms 1993 15%

Ventilation Rooftop Exhaust Fan Dayton M#4HZ406,

S#11292027 Electric

Roof Near Penthouse

Mechanical Rooms

2004 70%


S#11292028 Electric

Roof Near Penthouse

Mechanical Rooms

2004 70%


S#11292029 Electric

Roof Near Penthouse

Mechanical Rooms

2004 70%

Ventilation Three (3) Rooftop Exhaust Fans - no nameplate visible

NA Electric Roof Toilets 1980 0%

Ventilation Walk -in refrigerator

exhaust fan Fantech, M#FX6 Electric Kitchen Kitchen 2004 70%


Building System


Installed


%

Ventilation Wall Mounted Exhaust

Fan, EF-23 300 CFM, 1/3 HP

Carnes Electric Courtyard

through wall Toilets 1993 15%

Water Heater

Electric Water Heater, 15.0 kW,

Hatco Co. M#CC15, S# SFL92-9258

Electric Kitchen Kitchen 1990 0%

Note: The remaining useful life of a system (in %) is an estimate based on the system date of built and existing conditions derived from visual inspection.


Appendix B: Lighting Study


Proposed Lighting Summary Table

Total Surface Area (SF) 102,436

Average Power Cost ($/kWh) 0.1930

Exterior Lighting Existing Proposed Savings

Exterior Annual Consumption (kWh) 36,407 22,969 13,438

Exterior Power (watts) 8,312 5,244 3,068

Total Interior Lighting Existing Proposed Savings

Annual Consumption (kWh) 287,398 203,105 84,293

Lighting Power (watts) 146,222 107,475 38,747

Lighting Power Density (watts/SF) 1.43 1.05 0.38

Estimated Cost of Fixture Replacement ($) 177,400

Estimated Cost of Controls Improvements ($) 7,200

Total Consumption Annual Cost Savings ($) 28,816


APPENDIX C: THIRD PARTY ENERGY SUPPLIERS http://www.state.nj.us/bpu/commercial/shopping.html

Third Party Electric Suppliers for PSEG Service Territory

Telephone & Web Site

Hess Corporation (800) 437-7872

1 Hess Plaza www.hess.com

Woodbridge, NJ 07095

American Powernet Management, LP (877) 977-2636

437 North Grove St. www.americanpowernet.com

Berlin, NJ 08009

BOC Energy Services, Inc. (800) 247-2644

575 Mountain Avenue www.boc.com

Murray Hill, NJ 07974

Commerce Energy, Inc. (800) 556-8457

4400 Route 9 South, Suite 100 www.commerceenergy.com

Freehold, NJ 07728

ConEdison Solutions (888) 665-0955

535 State Highway 38 www.conedsolutions.com

Cherry Hill, NJ 08002

Constellation NewEnergy, Inc. (888) 635-0827

900A Lake Street, Suite 2 www.newenergy.com

Ramsey, NJ 07446

Credit Suisse, (USA) Inc. (212) 538-3124

700 College Road East www.creditsuisse.com

Princeton, NJ 08450

Direct Energy Services, LLC (866) 547-2722

120 Wood Avenue, Suite 611 www.directenergy.com

Iselin, NJ 08830

FirstEnergy Solutions (800) 977-0500

300 Madison Avenue www.fes.com

Morristown, NJ 07926

Glacial Energy of New Jersey, Inc. (877) 569-2841

207 LaRoche Avenue www.glacialenergy.com

Harrington Park, NJ 07640

Metro Energy Group, LLC (888) 536-3876

14 Washington Place www.metroenergy.com

Hackensack, NJ 07601

Integrys Energy Services, Inc. (877) 763-9977

99 Wood Ave, South, Suite 802 www.integrysenergy.com

Iselin, NJ 08830

Liberty Power Delaware, LLC (866) 769-3799

Park 80 West Plaza II, Suite 200 www.libertypowercorp.com

Saddle Brook, NJ 07663

Liberty Power Holdings, LLC (800) 363-7499

Park 80 West Plaza II, Suite 200 www.libertypowercorp.com

Saddle Brook, NJ 07663

http://www.state.nj.us/bpu/commercial/shopping.html

http://www.hess.com/

http://www.americanpowernet.com/

http://www.boc.com/

http://www.commerceenergy.com/

http://www.conedsolutions.com/

http://www.newenergy.com/

http://www.creditsuisse.com/

http://www.directenergy.com/

http://www.fes.com/

http://www.glacialenergy.com/

http://www.metroenergy.com/

http://www.integrysenergy.com/

http://www.libertypowercorp.com/

http://www.libertypowercorp.com/


Third Party Electric Suppliers for PSEG Service Territory


Pepco Energy Services, Inc. (800) 363-7499

112 Main St. www.pepco-services.com

Lebanon, NJ 08833

PPL EnergyPlus, LLC (800) 281-2000

811 Church Road www.pplenergyplus.com


Sempra Energy Solutions (877) 273-6772

581 Main Street, 8th Floor www.semprasolutions.com


South Jersey Energy Company (800) 756-3749

One South Jersey Plaza, Route 54 www.southjerseyenergy.com

Folsom, NJ 08037

Sprague Energy Corp. (800) 225-1560

12 Ridge Road www.spragueenergy.com

Chatham Township, NJ 07928

Strategic Energy, LLC (888) 925-9115

55 Madison Avenue, Suite 400 www.sel.com

Morristown, NJ 07960

Suez Energy Resources NA, Inc. (888) 644-1014

333 Thornall Street, 6th Floor www.suezenergyresources.com

Edison, NJ 08837

UGI Energy Services, Inc. (856) 273-9995

704 East Main Street, Suite 1 www.ugienergyservices.com

Moorestown, NJ 08057

Third Party Gas Suppliers for PSEG Service Territory


Cooperative Industries (800) 628-9427

412-420 Washington Avenue www.cooperativenet.com

Belleville, NJ 07109

Direct Energy Services, LLC (866) 547-2722

120 Wood Avenue, Suite 611 www.directenergy.com

Iselin, NJ 08830

Dominion Retail, Inc. (866) 275-4240

395 Highway 170, Suite 125 www.retail.dom.com

Lakewood, NJ 08701

Gateway Energy Services Corp. (800) 805-8586

44 Whispering Pines Lane www.gesc.com

Lakewood, NJ 08701

UGI Energy Services, Inc. (856) 273-9995

704 East Main Street, Suite 1 www.ugienergyservices.com

Moorestown, NJ 08057

http://www.pepco-services.com/

http://www.cooperativenet.com/

http://www.directenergy.com/

http://www.retail.dom.com/

http://www.gesc.com/

http://www.ugienergyservices.com/


Third Party Gas Suppliers for PSEG Service Territory


Great Eastern Energy (888) 651-4121

116 Village Riva, Suite 200 www.greateastern.com

Princeton, NJ 08540

Hess Corporation (800) 437-7872

1 Hess Plaza www.hess.com


Hudson Energy Services, LLC (877) 483-7669

545 Route 17 South www.hudsonenergyservices.com

Ridgewood, NJ 07450

Intelligent Energy (800) 724-1880

2050 Center Avenue, Suite 500 www.intelligentenergy.org

Fort Lee, NJ 07024

Keil & Sons (877) 797-8786

1 Bergen Blvd. www.systrumenergy.com

Fairview, NJ 07002

Metro Energy Group, LLC (888) 536-3876

14 Washington Place www.metroenergy.com

Hackensack, NJ 07601

MxEnergy, Inc. (800) 375-1277

510 Thornall Street, Suite 270 www.mxenergy.com

Edison, NJ 08837

NATGASCO (Mitchell Supreme) (800) 840-4427

532 Freeman Street www.natgasco.com

Orange, NJ 07050

Pepco Energy Services, Inc. (800) 363-7499

112 Main Street www.pepco-services.com

Lebanon, NJ 08833

PPL EnergyPlus, LLC (800) 281-2000

811 Church Road www.pplenergyplus.com


Sempra Energy Solutions (877) 273-6772

581 Main Street, 8th Floor www.semprasolutions.com


South Jersey Energy Company (800) 756-3749

One South Jersey Plaza, Route 54 www.southjerseyenergy.com

Folsom, NJ 08037

Sprague Energy Corp. (800) 225-1560

12 Ridge Road www.spragueenergy.com

Chatham Township, NJ 07928

Stuyvesant Energy LLC (800) 646-6457

10 West Ivy Lane, Suite 4 www.stuyfuel.com

Englewood, NJ 07631

Woodruff Energy (800) 557-1121

73 Water Street www.woodruffenergy.com

Bridgeton, NJ 08302

http://www.greateastern.com/

http://www.hess.com/

http://www.pplenergyplus.com/

http://www.semprasolutions.com/

http://www.southjerseyenergy.com/

http://www.spragueenergy.com/

http://www.stuyfuel.com/

http://www.woodruffenergy.com/


APPENDIX D: GLOSSARY AND METHOD OF CALCULATIONS Net ECM Cost: The net ECM cost is the cost experienced by the customer, which is typically the total cost (materials + labor) of installing the measure minus any available incentives. Both the total cost and the incentive amounts are expressed in the summary for each ECM. Annual Energy Cost Savings (AECS): This value is determined by the audit firm based on the calculated energy savings (kWh or Therm) of each ECM and the calculated energy costs of the building. Lifetime Energy Cost Savings (LECS): This measure estimates the energy cost savings over the lifetime of the ECM. It can be a simple estimation based on fixed energy costs. If desired, this value can factor in an annual increase in energy costs as long as the source is provided. Simple Payback: This is a simple measure that displays how long the ECM will take to break-even based on the annual energy and maintenance savings of the measure. ECM Lifetime: This is included with each ECM so that the owner can see how long the ECM will be in place and whether or not it will exceed the simple payback period. Additional guidance for calculating ECM lifetimes can be found below. This value can come from manufacturer‘s rated lifetime or warranty, the ASHRAE rated lifetime, or any other valid source. Operating Cost Savings (OCS): This calculation is an annual operating savings for the ECM. It is the difference in the operating, maintenance, and / or equipment replacement costs of the existing case versus the ECM. In the case where an ECM lifetime will be longer than the existing measure (such as LED lighting versus fluorescent) the operating savings will factor in the cost of replacing the units to match the lifetime of the ECM. In this case or in one where one-time repairs are made, the total replacement / repair sum is averaged over the lifetime of the ECM. Return on Investment (ROI): The ROI is expresses the percentage return of the investment based on the lifetime cost savings of the ECM. This value can be included as an annual or lifetime value, or both. Net Present Value (NPV): The NPV calculates the present value of an investment‘s future cash flows based on the time value of money, which is accounted for by a discount rate (assumes bond rate of 3.2%). Internal Rate of Return (IRR): The IRR expresses an annual rate that results in a break-even point for the investment. If the owner is currently experiencing a lower return on their capital than the IRR, the project is financially advantageous. This measure also allows the owner to compare ECMs against each other to determine the most appealing choices. Gas Rate and Electric Rate ($/therm and $/kWh): The gas rate and electric rate used in the financial analysis is the total annual energy cost divided by the total annual energy usage for the 12 month billing period studied. The graphs of the monthly gas and electric rates reflect the total monthly energy costs divided by the monthly usage, and display how the average rate fluctuates throughout the year. The average annual rate is the only rate used in energy savings calculations.


Calculation References

Term Definition

ECM Energy Conservation Measure

AOCS Annual Operating Cost Savings

AECS Annual Energy Cost Savings

LOCS* Lifetime Operating Cost Savings

LECS Lifetime Energy Cost Savings

LCS Lifetime Cost Savings

NPV Net Present Value

IRR Internal Rate of Return

DR Discount Rate

Net ECM Cost Total ECM Cost – Incentive

LECS AECS X ECM Lifetime

AOCS LOCS / ECM Lifetime

LCS LOCS+LECS

Simple Payback Net ECM Cost / (AECS + AOCS)

Lifetime ROI (LECS + LOCS – Net ECM Cost) / Net ECM Cost

Annual ROI (Lifetime ROI / Lifetime) = [(AECS + OCS) / Net ECM Cost – (1 / Lifetime)]

* The lifetime operating cost savings are all avoided operating, maintenance, and/or component replacement costs over the lifetime of the ECM. This can be the sum of any annual operating savings, recurring or bulk (i.e. one-time repairs) maintenance savings, or the savings that comes from avoiding equipment replacement needed for the existing measure to meet the lifetime of the ECM (e.g. lighting change outs).

Excel NPV and IRR Calculation In Excel, function =IRR (values) and =NPV(rate, values) are used to quickly calculate the IRR and NPV of a series of annual cash flows. The investment cost will typically be a negative cash flow at year 0 (total cost - incentive) with years 1 through the lifetime receiving a positive cash flow from the annual energy cost savings and annual maintenance savings. The calculations in the example below are for an ECM that saves $850 annually in energy and maintenance costs (over a 10 year lifetime) and takes $5,000 to purchase and install after incentives:


Solar PV ECM Calculation Solar Pathfinder Results:

There are several components to the calculation: Costs: Material of PV system including panels, mounting and net-metering +

Labor Energy Savings: Reduction of kWh electric cost for life of panel, 25 years Incentive 1: NJ Renewable Energy Incentive Program (REIP), for systems of size

50kW or less, $1/Watt incentive subtracted from installation cost Incentive 2: Solar Renewable Energy Credits (SRECs) – Market-rate incentive.

Calculations assume $600/Megawatt hour consumed per year for a maximum of 15 years; added to annual energy cost savings for a period of 15 years. (Megawatt hour used is rounded to nearest 1,000 kWh)

Assumptions: A Solar Pathfinder device is used to analyze site shading for the building


and determine maximum amount of full load operation based on available sunlight. When the Solar Pathfinder device is not implemented, amount of full load operation based on available sunlight is assumed to be 1,180 hours in New Jersey.

Total lifetime PV energy cost savings = kWh produced by panel * [$/kWh cost * 25 years + $600/Megawatt hour /1000 * 15 years]

Annual Solar PV Cost Savings Breakdown

Rated Capacity (kW) 56.4

Rated Capacity (kWh)

69,677

Annual Capacity Loss 0%

Year kWh

Capacity Installed

Cost Incentives

Electric Savings ($)

0 $394,450 $0

1 69,677 $41,400 $13,478

2 69,677 $41,400 $13,478

3 69,677 $41,400 $13,478

4 69,677 $41,400 $13,478

5 69,677 $41,400 $13,478

6 69,677 $41,400 $13,478

7 69,677 $41,400 $13,478

8 69,677 $41,400 $13,478

9 69,677 $41,400 $13,478

10 69,677 $41,400 $13,478

11 69,677 $41,400 $13,478

12 69,677 $41,400 $13,478

13 69,677 $41,400 $13,478

14 69,677 $41,400 $13,478

15 69,677 $41,400 $13,478

16 69,677 $0 $13,478

17 69,677 $0 $13,478

18 69,677 $0 $13,478

19 69,677 $0 $13,478

20 69,677 $0 $13,478

21 69,677 $0 $13,478

22 69,677 $0 $13,478

23 69,677 $0 $13,478

24 69,677 $0 $13,478

25 69,677 $0 $13,478

kWh Cost Saving

Lifetime Total 1,741,925 ($394,450) $621,000 $336,951


ECM and Equipment Lifetimes Determining a lifetime for equipment and ECM‘s can sometimes be difficult. The following table contains a list of lifetimes that the NJCEP uses in its commercial and industrial programs. Other valid sources are also used to determine lifetimes, such as the DOE, ASHRAE, or the manufacturer‘s warranty. Lighting is typically the most difficult lifetime to calculate because the fixture, ballast, and bulb can all have different lifetimes. Essentially the ECM analysis will have different operating cost savings (avoided equipment replacement) depending on which lifetime is used. When the bulb lifetime is used (rated burn hours / annual burn hours), the operating cost savings is just reflecting the theoretical cost of replacing the existing case bulb and ballast over the life of the recommended bulb. Dividing by the bulb lifetime will give an annual operating cost savings. When a fixture lifetime is used (e.g. 15 years) the operating cost savings reflects the avoided bulb and ballast replacement cost of the existing case over 15 years minus the projected bulb and ballast replacement cost of the proposed case over 15 years. This will give the difference of the equipment replacement costs between the proposed and existing cases and when divided by 15 years will give the annual operating cost savings.


New Jersey Clean Energy Program Commercial & Industrial Lifetimes

Measure Life Span

Commercial Lighting — New 15

Commercial Lighting — Remodel/Replacement 15

Commercial Custom — New 18

Commercial Chiller Optimization 18

Commercial Unitary HVAC — New - Tier 1 15

Commercial Unitary HVAC — Replacement - Tier 1 15

Commercial Unitary HVAC — New - Tier 2 15

Commercial Unitary HVAC — Replacement Tier 2 15

Commercial Chillers — New 25

Commercial Chillers — Replacement 25

Commercial Small Motors (1-10 HP) — New or Replacement 20

Commercial Medium Motors (11-75 HP) — New or Replacement 20

Commercial Large Motors (76-200 HP) — New or Replacement 20

Commercial VSDs — New 15

Commercial VSDs — Retrofit 15

Commercial Comprehensive New Construction Design 18

Commercial Custom — Replacement 18

Industrial Lighting — New 15

Industrial Lighting — Remodel/Replacement 15

Industrial Unitary HVAC — New - Tier 1 15

Industrial Unitary HVAC — Replacement - Tier 1 15

Industrial Unitary HVAC — New - Tier 2 15

Industrial Unitary HVAC — Replacement Tier 2 15

Industrial Chillers — New 25

Industrial Chillers — Replacement 25

Industrial Small Motors (1-10 HP) — New or Replacement 20

Industrial Medium Motors (11-75 HP) — New or Replacement 20

Industrial Large Motors (76-200 HP) — New or Replacement 20

Industrial VSDs — New 15

Industrial VSDs — Retrofit 15

Industrial Custom — Non-Process 18

Industrial Custom — Process 10

Small Commercial Gas Furnace — New or Replacement 20

Small Commercial Gas Boiler — New or Replacement 20

Small Commercial Gas DHW — New or Replacement 10

C&I Gas Absorption Chiller — New or Replacement 25

C&I Gas Custom — New or Replacement (Engine Driven Chiller) 25

C&I Gas Custom — New or Replacement (Gas Efficiency Measures) 18

O&M savings 3

Compressed Air (GWh participant) 8


APPENDIX E: STATEMENT OF ENERGY PERFORMANCE FROM ENERGY STAR®


APPENDIX F: INCENTIVE PROGRAMS

New Jersey Clean Energy Pay for Performance The NJ Clean Energy Pay for Performance (P4P) Program relies on a network of Partners who provide technical services to clients. LGEA participating clients who are not receiving Direct Energy Efficiency and Conservation Block Grants are eligible for P4P. SWA is an eligible Partner and can develop an Energy Reduction Plan for each project with a whole-building traditional energy audit, a financial plan for funding the energy measures and an installation construction schedule.

The Energy Reduction Plan must define a comprehensive package of measures capable of reducing a building‘s energy consumption by 15+%. P4P incentives are awarded upon the satisfactory completion of three program milestones: submittal of an Energy Reduction Plan prepared by an approved Program Partner, installation of the recommended measures and completion of a Post-Construction Benchmarking Report. The incentives for electricity and natural gas savings will be paid based on actual savings, provided that the minimum 15%performance threshold savings has been achieved.

For further information, please see: http://www.njcleanenergy.com/commercial-industrial/programs/pay-performance/existing-buildings .

Direct Install 2010 Program* Direct Install is a division of the New Jersey Clean Energy Programs‘ Smart Start Buildings. It is a turn-key program for small to mid-sized facilities to aid in upgrading equipment to more efficient types. It is designed to cut overall energy costs by upgrading lighting, HVAC and other equipment with energy efficient alternatives. The program pays up to 60% of the retrofit costs, including equipment cost and installation costs. Eligibility:

Existing small and mid-sized commercial and industrial facilities with peak electrical demand below 200 kW within 12 months of applying

Must be located in New Jersey

Must be served by one of the state‘s public, regulated or natural gas companies

Electric: Atlantic City Electric, Jersey Central Power & Light, Orange Rockland Electric, PSE&G

Natural Gas: Elizabethtown Gas, New Jersey Natural Gas, PSE&G, South Jersey Gas

For the most up to date information on contractors in New Jersey who participate in this program, go to: http://www.njcleanenergy.com/commercial-industrial/programs/direct-install Smart Start New Jersey‘s SmartStart Building Program is administered by New Jersey‘s Office of Clean Energy. The program also offers design support for larger projects and technical assistance for smaller projects. If your project specifications do not fit into anything defined by the program, there are even incentives available for custom projects.

http://www.njcleanenergy.com/commercial-industrial/programs/pay-performance/existing-buildings

http://www.njcleanenergy.com/commercial-industrial/programs/pay-performance/existing-buildings

http://www.njcleanenergy.com/commercial-industrial/programs/direct-install


There are a number of improvement options for commercial, industrial, institutional, government, and agricultural projects throughout New Jersey. Alternatives are designed to enhance quality while building in energy efficiency to save money. Project categories included in this program are New Construction and Additions, Renovations, Remodeling and Equipment Replacement. For the most up to date information on how to participate in this program, go to: http://www.njcleanenergy.com/commercial-industrial/programs/nj-smartstart-buildings/nj-smartstart-buildings. Renewable Energy Incentive Program* The Renewable Energy Incentive Program (REIP) provides incentives that reduce the upfront cost of installing renewable energy systems, including solar, wind, and sustainable biomass. Incentives vary depending upon technology, system size, and building type. Current incentive levels, participation information, and application forms can be found at the website listed below. Solar Renewable Energy Credits (SRECs) represent all the clean energy benefits of electricity generated from a solar energy system. SRECs can be sold or traded separately from the power, providing owners a source of revenue to help offset the cost of installation. All solar project owners in New Jersey with electric distribution grid-connected systems are eligible to generate SRECs. Each time a system generates 1,000 kWh of electricity an SREC is earned and placed in the customer's account on the web-based SREC tracking system. For the most up to date information on how to participate in this program, go to: http://www.njcleanenergy.com/renewable-energy/home/home.

Utility Sponsored Programs Check with your local utility companies for further opportunities that may be available. Energy Efficiency and Conservation Block Grant Rebate Program The Energy Efficiency and Conservation Block Grant (EECBG) Rebate Program provides supplemental funding up to $20,000 for eligible New Jersey local government entities to lower the cost of installing energy conservation measures. Funding for the EECBG Rebate Program is provided through the American Recovery and Reinvestment Act (ARRA). For the most up to date information on how to participate in this program, go to: http://njcleanenergy.com/EECBG Other Federal and State Sponsored Programs Other federal and state sponsored funding opportunities may be available, including BLOCK and R&D grant funding. For more information, please check http://www.dsireusa.org/. *Subject to availability. Incentive program timelines might not be sufficient to meet the 25% in 12 months spending requirement outlined in the LGEA program.

http://www.njcleanenergy.com/commercial-industrial/programs/nj-smartstart-buildings/nj-smartstart-buildings

http://www.njcleanenergy.com/commercial-industrial/programs/nj-smartstart-buildings/nj-smartstart-buildings

http://www.njcleanenergy.com/renewable-energy/home/home

http://njcleanenergy.com/EECBG

http://www.dsireusa.org/


APPENDIX G: ENERGY CONSERVATION MEASURES

EC

M #

ECM description

est.

in

ce

ntives,

$

ne

t est.

EC

M c

ost

with

ince

ntive

s, $

kW

h, 1

st yr

sa

vin

gs

kW

, de

man

d

red

uctio

n/m

o

the

rms,

1st yr

sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

sa

vin

gs

est.

op

era

tin

g c

ost,

1st yr

sa

vin

gs,

$

tota

l 1

st yr

sa

vin

gs,

$

life

of

me

asu

re, yrs

est.

lifetim

e c

ost

sa

vin

gs,

$

sim

ple

pa

yb

ack, yrs

life

tim

e r

etu

rn o

n

investm

en

t, %

an

nu

al re

turn

on

investm

en

t, %

inte

rna

l ra

te o

f

retu

rn, %

ne

t p

resen

t va

lue

, $

CO

2 re

du

ced

, lb

s/y

r

0-5

Ye

ar P

ayb

ack

1

(119) New CFL fixtures to be installed with

incentives

0 1,117 6,238 1.3 0 0.2 943 2,147 5 10,735 0.5 861 172 191 8,391 11,169

2 Install (3) Energy Vending Miser®

devices 0 1,016 5,600 0.2 0 0.2 140 1,223 12 14,679 0.8 1,345 112 120 10,674 10,027

3 Upgrade (14) Metal Halide fixtures to T5 fluorescent fixtures

224 3,276 8,140 1.7 0 0.3 635 2,206 15 33,084 1.5 910 61 67 21,975 14,574

4 Install (37) new LED

exit signs 740 4,829 10,893 2.3 0 0.4 119 2,221 15 33,315 2.2 590 39 46 20,645 19,504

5

Upgrade (22) Barber Coleman Sensors to

Programmable Thermostats

0 3,674 0 0.0 872 0.9 0 1,167 12 14,007 3.1 281 23 30 7,565 9,612

5-1

0 Y

ear

P

ayb

ack

6 Install (33) Pulse Start Metal Halide

fixtures 825 24,270 13,684 2.9 0 0.5 1,601 4,242 15 63,630 5.7 162 11 15 24,851 24,501

7 Upgrade BMS to include all Unit

Ventilators 0 27,000 0 0.0 0 0.0 4,000 4,000 15 60,000 6.8 122 8 12 19,446 0

8 Install 56.35 kW

Rooftop Photovoltaic System

0 394,450 69,677 56.4 0.0 2.3 0 54,878 25 1,371,951 7.2 248 10 12 312,263 124,757


5-1

0 Y

ear

EC

M #

ECM description

est.

in

ce

ntives,

$

ne

t est.

EC

M

co

st w

ith

incen

tive

s,

$

kW

h, 1

st yr

sa

vin

gs

kW

, de

man

d

red

uctio

n/m

o

the

rms,

1st yr

sa

vin

gs

kB

tu/s

q f

t, 1

st

yr

savin

gs

est.

op

era

tin

g

co

st, 1

st

yr

sa

vin

gs,

$

tota

l 1

st yr

sa

vin

gs,

$

life

of

me

asu

re,

yrs

est.

lifetim

e

co

st savin

gs, $

sim

ple

pa

yba

ck,

yrs

life

tim

e r

etu

rn

on

investm

en

t,

%

an

nu

al re

turn

on

investm

en

t,

%

inte

rna

l ra

te o

f

retu

rn, %

ne

t p

resen

t

va

lue

, $

CO

2 re

du

ced

,

lbs/y

r

9

Replace 3 Cast Iron Boilers with 2

New High Efficiency boilers

5,000 72,000 0 0.0 6,187 6.0 1,440 9,722 25 243,041 7.4 238 10 13 90,672 68,199

10 Install (810) T8

fluorescent fixtures 12,150 143,921 55,715 11.6 0 1.9 4,826 15,579 15 233,691 9.2 62 4 7 38,181 99,758

>10

Ye

ar

Pay

bac

k (E

nd

of

Life

M

eas

ure

s)

11

Install (36) wall-mounted

occupancy sensors

720 7,200 3,061 0.6 0 0.1 0 591 15 8,861 12.2 23 2 3 -241 5,480

12 Install (35) TRVs

on Steam Radiators

0 3,674 0 0.0 309 0.3 0 414 20 8,282 12.7 58 3 5 773 3,410


APPENDIX H: METHOD OF ANALYSIS

Assumptions and tools

Energy modeling tool: Established/standard industry assumptions Cost estimates: RS Means 2009 (Facilities Maintenance & Repair Cost Data)

RS Means 2009 (Building Construction Cost Data) RS Means 2009 (Mechanical Cost Data)

Published and established specialized equipment material and labor costs Cost estimates also based on utility bill analysis and prior experience with similar projects

Disclaimer

This engineering audit was prepared using the most current and accurate fuel consumption data available for the site. The estimates that it projects are intended to help guide the owner toward best energy choices. The costs and savings are subject to fluctuations in weather, variations in quality of maintenance, changes in prices of fuel, materials, and labor, and other factors. Although we cannot guarantee savings or costs, we suggest that you use this report for economic analysis of the building and as a means to estimate future cash flow.

THE RECOMMENDATIONS PRESENTED IN THIS REPORT ARE BASED ON THE RESULTS OF ANALYSIS, INSPECTION, AND PERFORMANCE TESTING OF A SAMPLE OF COMPONENTS OF THE BUILDING SITE. ALTHOUGH CODE-RELATED ISSUES MAY BE NOTED, SWA STAFF HAVE NOT COMPLETED A COMPREHENSIVE EVALUATION FOR CODE-COMPLIANCE OR HEALTH AND SAFETY ISSUES. THE OWNER(S) AND MANAGER(S) OF THE BUILDING(S) CONTAINED IN THIS REPORT ARE REMINDED THAT ANY IMPROVEMENTS SUGGESTED IN THIS SCOPE OF WORK MUST BE PERFORMED IN ACCORDANCE WITH ALL LOCAL, STATE, AND FEDERAL LAWS AND REGULATIONS THAT APPLY TO SAID WORK. PARTICULAR ATTENTION MUST BE PAID TO ANY WORK WHICH INVOLVES HEATING AND AIR MOVEMENT SYSTEMS, AND ANY WORK WHICH WILL INVOLVE THE DISTURBANCE OF PRODUCTS CONTAINING MOLD, ASBESTOS, OR LEAD.

ridgewood avenue school 235 ridgewood - nj clean energy audit reports - july 2012... · ridgewood...

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