Christian Health Care CenterChristian Health Care CenterWyckoff, NJWyckoff, NJ

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Previous Energy Management Previous Energy Management InitiativesInitiatives

► Lighting Retrofits.Lighting Retrofits. Campus WideCampus Wide

► Insulation Upgrades.Insulation Upgrades. Bld-1, 2, 5, &7Bld-1, 2, 5, &7

► Boiler replacement with high Boiler replacement with high efficiency multi-stage or modular efficiency multi-stage or modular boilers.boilers.

► Switch electric heat to gas.Switch electric heat to gas.

► Remove unused hot/hot domestic Remove unused hot/hot domestic H/W systems.H/W systems.

► Utilize lower temperature H/W Utilize lower temperature H/W systems and boost as needed systems and boost as needed locally.locally.

► Window Replacement.Window Replacement. Bld-1, 2, 5, 7, & all new Bld-1, 2, 5, 7, & all new

► Energy Management systems.Energy Management systems. Previously primarily upper Previously primarily upper

campus, currently expanding to campus, currently expanding to whole campus and updating whole campus and updating older systemsolder systems

Night Setback and Unoccupied Night Setback and Unoccupied settingssettings

► Variable Speed Drives & Soft Starts.Variable Speed Drives & Soft Starts. Large Pumps and FansLarge Pumps and Fans

► Air Condition Makeup Air for Air Condition Makeup Air for dehumidification.dehumidification. Added comfort while Added comfort while

maintaining higher space maintaining higher space temperaturestemperatures

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Previous Energy Management Previous Energy Management InitiativesInitiatives

► White Roofing / Cooler building.White Roofing / Cooler building. Bld-2, Small portion of Bld-2, Small portion of

CommonCommon

► Motor replacement.Motor replacement. Replacement with high Replacement with high

efficiency motors at time of efficiency motors at time of replacementreplacement

► All New Construction include All New Construction include the newest technology.the newest technology.

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Micro-turbine / ChillerMicro-turbine / Chiller► Cogeneration is the Cogeneration is the

simultaneous generation of simultaneous generation of power and heat / cooling. power and heat / cooling. Combined heat and power. Combined heat and power. (CHP)(CHP)

► Conventional power generation Conventional power generation is only 35% efficient with up to is only 35% efficient with up to 65% of the energy released as 65% of the energy released as waste heat. waste heat.

► Further loses of 5-10% are lost Further loses of 5-10% are lost with the transmission and with the transmission and distribution via the grid.distribution via the grid.

► The efficiency of a cogeneration The efficiency of a cogeneration plant reach 90% or more with an plant reach 90% or more with an energy savings ranging between energy savings ranging between 15-40%.15-40%.

► Benefits of CogenerationBenefits of Cogeneration Increased energy conservation.Increased energy conservation.

Lower emissions particularly Lower emissions particularly CO2.CO2.

Cost savings providing Cost savings providing additional competitiveness.additional competitiveness.

Move toward decentralized Move toward decentralized electric generation, higher electric generation, higher efficiency, lower transmission efficiency, lower transmission loss, increased flexibility.loss, increased flexibility.

Removes load from the grid Removes load from the grid reducing the amount it has to reducing the amount it has to be built up and reducing strain be built up and reducing strain which cause brown and black which cause brown and black outs. outs.

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PureComfort SystemPureComfort System► Micro-turbinesMicro-turbines

Configuration of four 60 kW Configuration of four 60 kW micro-turbines producing gross micro-turbines producing gross electric power output of 240 kW. electric power output of 240 kW.

Air-bearings enable them to Air-bearings enable them to operate lubricant-free for operate lubricant-free for thousands of hours between thousands of hours between scheduled maintenance scheduled maintenance intervals.intervals.

Inverter-based power conversion Inverter-based power conversion simplifies interconnection with simplifies interconnection with the grid.the grid.

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Exhaust Diverter ValveExhaust Diverter Valve

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PureComfort SystemPureComfort System► Double-effect Absorption Double-effect Absorption

ChillerChiller

Highly efficient exhaust Highly efficient exhaust driven chillers generate an driven chillers generate an output rate of 130% - 30% output rate of 130% - 30% higher than the waste heat higher than the waste heat it absorbs.it absorbs.

A supplemental heat A supplemental heat exchanger is available to exchanger is available to increase the overall annual increase the overall annual efficiency of the system. efficiency of the system.

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Two Cell Cooling TowerTwo Cell Cooling Tower

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Backup Air Cooled ChillerBackup Air Cooled Chiller

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Generated & Imported Power Generated & Imported Power ProfilesProfiles

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Energy Management – Building Wake UpEnergy Management – Building Wake Up

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Decreased Demand ChargeDecreased Demand Charge

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8:40

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11:40

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21:40

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3:40

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6:40

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Spark Spread CalculationSpark Spread Calculation

Cost of Gas $Maintenance, Service, & Repair $Equipment Capitalization $Total Cost to Produce Electric $Grid Cost per KWH $Spark Spread (+ / -)Credit from Thermal Output $

Financially Viable Operation ( + )

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““Free” Thermal OutputFree” Thermal Output► Accounting for the “free Accounting for the “free

heating” byproduct.heating” byproduct.

Main & domestic hot water Main & domestic hot water loop temperature and flow.loop temperature and flow.

Convert to BTU.Convert to BTU.

Current Gas pricing.Current Gas pricing.

Adjust to replaced Adjust to replaced equipment efficiencies.equipment efficiencies.

Laundry Hot Water Pre-heatLaundry Hot Water Pre-heatOriginal DesignOriginal Design Hot Water Pre-HeatHot Water Pre-Heat

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Laundry Hot Water Re-DesignLaundry Hot Water Re-Design

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Original One Pass Design New Separate Pre-Heat Tank

8.35 Weight of Water 8.35 Weight of Water324 # of Gallons / per Fill 324 # of Gallons / per Fill

2,703 Pounds Of Water 2,703 Pounds Of Water7 Temperature Rise 55 Temperature Rise

18,927 BTU 148,715 BTU

786% More BTUs from Chiller

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Power Loading StrategiesPower Loading Strategies► Base load Power GenerationBase load Power Generation

Use when gas price to electric Use when gas price to electric price is highly advantageous.price is highly advantageous.

Savings by displaced Savings by displaced commodity cost and lower commodity cost and lower demand charges.demand charges.

► Peaking Power GenerationPeaking Power Generation Use when gas price to electric Use when gas price to electric

price is close but peak price is close but peak shaving would be beneficial.shaving would be beneficial.

No or minimal commodity No or minimal commodity saving but lower demand saving but lower demand charges.charges.

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Power Loading StrategiesPower Loading Strategies► Load Following GenerationLoad Following Generation

Use when price of gas is to Use when price of gas is to high to make generation of high to make generation of electric advantageous. electric advantageous.

Produce thermal load with Produce thermal load with electric production being electric production being secondary.secondary.

Lose on commodity but Lose on commodity but saving realized with saving realized with electricity produced.electricity produced.

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Future OpportunitiesFuture Opportunities► Facility energy Facility energy

management plan.management plan.

► Expanded use of Micro-Expanded use of Micro-turbine / Chiller.turbine / Chiller.

► Grant Submission for Bld-Grant Submission for Bld-3 & 4 boilers and 3 & 4 boilers and domestic hot water domestic hot water systems.systems.

► Upgrade Bld-4 through Upgrade Bld-4 through wall HVAC units.wall HVAC units.

► Solar Power.Solar Power.

► Expanded energy Expanded energy management system.management system.

► Occupancy SensorsOccupancy Sensors

► Additional window Additional window upgrades.upgrades.

RecommendationsRecommendations1.1. Hold vendor to financially viable Hold vendor to financially viable

project.project.

2.2. Third party audit.Third party audit.

3.3. Refine the measurement of the Refine the measurement of the thermal output.thermal output.

4.4. Additional valves to properly Additional valves to properly separate and control the loads from separate and control the loads from the main loop.the main loop.

5.5. Add as much thermal load as Add as much thermal load as possible.possible.

6.6. Develop operating and sequencing Develop operating and sequencing criteria.criteria.

1.1. Involve the Operational departments in Involve the Operational departments in the process for maintainability and the process for maintainability and operability.operability.

2.2. Understand the electric and thermal Understand the electric and thermal loads of the buildings.loads of the buildings.

3.3. Have the finished drawings and Have the finished drawings and specifications up front before signing specifications up front before signing the final contract.the final contract.

4.4. Have firm performance goals built into Have firm performance goals built into project, measured by a dashboard. project, measured by a dashboard.

5.5. Supervise all phases of the installation.Supervise all phases of the installation.

6.6. Monitor the performance aggressively Monitor the performance aggressively documenting operating parameters and documenting operating parameters and performance. performance.

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