2012 critical issues summit energy panel, part iii

Alwyn A. JohnEnergy Management Coordinator

TST BOCES

AgendaPart I - The Basics of Energy

Management – What You Need to Know

Part II - Making Energy Performance Contracting Work for your District

Part III - Grab Long-term Benefits from your Capital Projects

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Part I

“Grab Long-term Benefits from Your Capital

Projects”

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Panel of ExpertsDan Birleau

ERSRoger Smith

BBS ArchitectsMarc Quail

TRANEWilliam Steward

TRANEJames Slavetskas

JBS PE Consulting4

Envelope Systems (Roof/Walls/Windows/Doors)

HVAC, Controls and Building AutomationLighting SystemsAlternative Technologies and Renewable

Energy Options

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Energy Options

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DC Brushless TechnologiesBrushless technology extends motor

service life and reduces maintenanceECM up to 70% more efficient than PSC

motorsVariable Speed improves Acoustics

Fan Coil with ECM

EfficienciesOn Permanent Split Capacitor

(PSC) motors, there is a significant performance degradation using multiple speeds. Typical full load efficiencies of a

motor is 55-65% at the rated voltage

In part load, these efficiencies can drop to 15-20%

On Brushless DC motors, full load efficiencies are 70% or betterThe real advantage of a brushless

DC motor becomes evident at part load, where its performance edge doubles or triples

Typical full-load efficiencies for fractional motors

Acoustical BenefitsMotors can still be used

with traditional thermostatsSoft Ramp between speeds

Allows the transition between speeds (H-M-L) less noticeable by occupants

Programmability Motor speeds (RPM) can be

adjusted for fan speeds (H-M-L) to minimize acoustical levels

Risk Reduction

Lows health care costs associated with both VOC’s & Airborne Biologics

Better Indoor Air Quality leads to increased productivity

Helps HVAC system performance

Catalytic Air Cleaner is the IAQ Solutions Provider

Benefits of Improved IAQ

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• Virus• Bacteria• Spores

ContaminantsContaminants

• Improve energy efficiency

Improve system performance

Improve classroom comfort level

Provide trends and analysis

Allow for proactive service

Operational and maintenance efficiency

Building Automation Systems

Reduce absenteeism Improve student test

scores Improve teacher

retention Reduce operating costs Taxpayer Accountability

What they do Benefits

“Intelligent buildings successfully merge building management and IT systems to optimize system performance and simplify facility operations”



Energy Options

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• Directional light source• LEDs are semi-conductors (non-filament source)• Extended lifetime rating (>50,000 hours)• Instant on (restrike times)• Environmentally sound (no mercury)• Cold temperature compliant – good for exterior

lighting• Dimmable

• Wide range of:�̵Product quality�̵Claims of product life: from 50,000 hours to 100,000+ hours.�̵Efficacy: “my product is 135 lumens/W”

• Long testing procedures, energy efficiency programs struggle to qualify products.

• Efficacy reached 200 lumens/W in a lab setting. Best commercial products 60-80 lumens/W.

• Still more expensive than the standard technologies.

• T5 is physically shorter and also has a different pin base.

• Ambient temperature significantly affects T5 and T5HO lamp light output

• Both T5 and T5HO retain 95% of light output at mean life, better than T12 and most T8 lamps

• T5 and T5HO luminaries cost about 20% more than T8 luminaries.

• T5 and T5HO lamps and ballast are more expensive • T5HO and T8 lamp-ballast systems have nearly

identical efficacy.• T8 comes in more lamps-ballast

combination options: high performance (“super”) T8and reduced wattage T8 – more flexibility.

T8

• Occupancy or daylighting based- On/off- Multi-level switching- Dimming

• Passive infrared, ultrasonic, both• Ceiling, wall or fixture mounted• Wireless• Scheduling Controls• Most common problems:

- Misapplication- Lack of or poor commissioning



Energy Options

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Alternative Technologies and Renewable Energy Options:

What are the questions that you should ask yourself and your peers before going there?

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GOAL:

“The goal is for the audience to begin to ask ourselves questions about the energy efficiency of systems and how does renewable energy fit into your energy mix”

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Geothermal Systems (actually a renewable – “The Earth”) 1. Why do I need a system such as Geothermal?2. Do I have year around air conditioning needs

throughout my building(s)?3. Do I need a new HVAC/Boiler/AC and

distribution system throughout my building(s)

4. How do I look at the economics associated with a new system?

5. Full cost or incremental cost to upgrade? 6. Have I reviewed my control system capability?7. What are the ground restrictions and quality

of water associated with drilling wells?8. Is commissioning needed for the controls?

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Co-Generation1. Do I have a heat sink?2. Will my utility rate schedule work with co-generation/load

reduction? 3. What do I feel is a reasonable profile is for generating

electricity? It is generally not 24/7 more like 10-12 hours per day for School buildings.

4. Do you need back up generation for my building(s)?5. Does this size fit my load reduction size?6. Induction vs. synchronous?7. Am I going through an HVAC/Boiler system upgrade?8. How are my staff skills for performing some of the routine

maintenance requirements? Do you really want to take this on?

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Renewable Energy Options1. What are my options?2. PV, Wind, Biomass and Geothermal3. What is the long term source of fuel for Biomass?4. How can you make it fit into my energy management plan?5. How can this “Program” within the school curriculum?6. Are financial incentives available?7. Are you expecting the Renewable energies to add

significantly to your energy reduction?

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Energy Options

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2012 critical issues summit energy panel, part iii

Education