Greenpark Fact Sheet.pdf - Open Hosting

Combined heat and power forAssisted Living CenterDG/CHP ProgramGreenpark Care CenterEngine Heat used for Building ServicesProject ProfileOverviewQuick FactsLocation:Brooklyn, NY (Con Edison)Installation Date:May 2003Operating Experience:8 years (as of 2011)CHP Equipment:Two 75 kW Engine-Generators SetsGenerating Capacity:150 kWHeat Recovery Application:HVAC and DHW (980MBtu/h peak)Design CHP Efficiency:76% HHV (estimated)Type of Fuel:Natural GasThe Greenpark Care Center is a 400 bed extended carefacility located in the Fort Greene section of Brooklyn,NY. The Center provides comprehensive medicalservices for infirmed patients. Foremost attention isgiven to maintaining the residents comfort and safety.Greenpark installed two 75 kW engine-generator sets tohelp reduce energy costs at the 30 year old facility.Power produced onsite directly reduces consumption ofutility supplied electricity. Heat recovered from theengine jackets and exhaust is used for space heating,domestic hot water (DHW) and laundry service.The ApplicationLike any other business, Greenpark tries to minimize itsoperating costs without jeopardizing quality; a difficultobjective given the services necessary in critical caresituations. Rising energy prices exaggeratedinefficiencies related to the age of the existingmechanical equipment and encouraged Greenpark toseek alternative technology solutions.Greenpark worked with American DG Energy to installtwo 75 kW Tecogen CHP modules. American DGdeveloped the installation and is responsible for itsongoing operation. The system offsets purchase ofnearly 1 million kWh of electricity annually. Heat fromthe engine coolant jackets and exhaust is recovered ashot water that is used to offset some of the site’sexisting thermal loads. As much as 490,000 Btu/h canbe recovered from each module at a maximum watertemperature of 230°F.Packaged Engine-Generator Set As Used At Site

CHP System and EquipmentGreenpark’s CHP system is configured on two, 8-cylinder natural gas fired enginegeneratorsets. All of the electricity that is produced is consumed onsite; the system’soutput can be modulated when the demand is at a minimum. Waste heat from the enginejackets and exhaust is recovered as hot water that is circulated through heat exchangersserving the hot water and space heating systems. The supply water is thus heated beforereaching the existing boilers causing fuel consumption to be proportionally decreased.Excess heat is rejected to the atmosphere through external radiators.Hot Water LoopDomesticHot Water“A solution thatpromises toimprove our energyefficiency andreduce our energycosts is veryappealing to us.”- Brian Glattstein,President, GreenparkCare CenterNatural GasSupplyEngine 1(75 kW)Engine 2(75 kW)SpaceHeatingLaundryWeb Linksand FurtherInformation:Economics and Environmental BenefitsHourly data were collected from the site from December 2003 through July 2007 and areavailable on NYSERDA’s DG/CHP web site. The data indicate the CHP system generallyoperated at its rated capacity and typically produced more than 900,000 kWh per yearsignificantly reducing the consumption of utility supplied electricity. At design conditionsthe CHP system should consume 27% less fuel than would otherwise have been usedpurchasing power from the grid and producing the equivalent of the recoverable heat onsite.Based on this comparison, use of the CHP system should result in carbon dioxide emissionsbeing reduced by approximately 530 tons per year.AmericanDGEnergy –Developer/Engineerwww.americandg.comEquipmentManufacturerwww.tecogen.comOtherDG/CHPResourceschp.nyserda.orgInstalled ModuleSummary of BenefitsElectric and Service ConnectionsCHP system predominately operates at rated capacityHigh level of efficiency is sustainedRecovered heat serves multiple end usesPrepared for NYSERDA by:CDH Energy Corp.Cazenovia, NY 13035315-655-1063www.cdhenergy.comdgchp_data@cdhenergy.com