Rochester Airport CHP Site Fact Sheet - Open Hosting

Combined heat and power forTransportation - AirportDG/CHP ProgramRochester AirportCHP Plant Provides Building HVACProject ProfileOverviewThe Greater Rochester International Airport (GRIA) isoperated by Monroe County on the west side of the city.The county strives to maximize the benefits it provideslocal taxpayers. Reducing energy costs is one of manyways the county seeks to fulfill that goal.Quick FactsLocation:Rochester, NY (RG&E)Installation Date:June 2002At GRIA this was achieved by installing two 750 kWengine-generators that produce about 90% of the site’selectricity. Hot water recovered from the enginesprovides seasonal heating and cooling at an overallefficiency that can exceed 80% HHV on the coldestdays of the year.The ApplicationOperating Experience:9 years (as of 2011)CHP Equipment:Two Waukesha 750 kWEngine-Generator SetsGenerating Capacity:1,500 kWHeat Recovery Application:Building HVACDesign CHP Efficiency:>80% HHV (Winter Peak)Type of Fuel:Natural GasGRIA originally used conventional HVAC systems toprovide space heating and cooling. The electricaldemand exceeded 2 MW in summer when cooling wasrequired while heating fuel consumption was thepredominant energy used in winter. The county workedwith Siemens Building Technologies, Inc., toimplement a number of energy conservation measures(ECMs) at the site. This was done through an energyservices performance contract that guaranteed thecounty a minimum level of monetary savings.Siemens installed two 750 kW generators that currentlyproduce most of the airport’s electricity and serve asbackup in the event of a blackout. Heat recovered fromthe engines is used to offset both space heating andcooling loads. Energy consumption at the airport hasbeen reduced almost 50% because of the combinedeffect of the CHP system and other ECMs.Annual Utility Savings:$334,000 per year (estimated)Simple Payback:9.4 years (estimated)750 kW Engine Generating Set During Installation

CHP System and EquipmentGRIA’s CHP system is configured on two 750 kW, natural gas fueled engine-generator sets.The generators and related ancillaries were pre-packaged on separate skids to facilitateconnection with the independent feeders that serve the airport’s east and west concourses.Electricity is produced in parallel with the local utility. The generators’ output is modulatedto follow the site load; no electricity is exported to the grid. Both units are equipped withsynchronous generators and can supplant use of the normal emergency power systems.Heat is recovered from each engine as hot water that can be used for spacing heating orcirculated through an absorption machine to produce chilled water for air conditioning.Excess heat is rejected to atmosphere through radiators included on the equipment skids.Engine 1(750 kW)Hot Water LoopTie-in to East andWest ConcourseHeating LoopsAbsorption Chiller300 Tons“This partnershiphas been a positiveexperience that metour expectations toproduce energyand reduce costs.”- Maggie Brooks,Monroe County ExecutiveWeb Linksand FurtherInformation:Natural Gas SupplyEngine 2(750 kW)Dump Radiators(separate by skid)Siemens BuildingTechnologies –ESCOEconomics and Environmental BenefitsGRIA is guaranteed annual savings of $500,000 for all of the ECMs implemented throughthe contract with Siemens. This ensures the county’s $2 million capital outlay will berecovered within ten years. However, payback is likely to be achieved in less time asenergy prices continue to escalate. Carbon dioxide emissions should be reduced by 2,260tons annually due to the greater overall efficiency of the CHP system compared to theconventional operation. Monitored data are being collected from the site and are availablein an hourly format on NYSERDA’s DG/CHP website from July 2006 through June 2011.www.siemens.comEquipmentManufacturerwww.waukeshaengine.comOtherDG/CHPResourceschp.nyserda.orgwww.rocairport.comInstalled View of Absorption ChillerSummary of BenefitsGenerator Package Outside ConcourseModular system provides redundancy and reliabilityAbsorption chiller offsets additional summer peak electrical loadsEconomic performance guaranteed by project developerPrepared for NYSERDA by:CDH Energy Corp.Cazenovia, NY 13035315-655-1063www.cdhenergy.comdgchp_data@cdhenergy.com