不同地区土壤温度及建筑负荷特性对地源热泵系统的影响

26820108BUILDINGSCIENCEVol.26No.8Aug.20101002-8528201008-0068-06112221.2100092.100044CFD、。DeST。。TQ051.5AInfluencesofDifferentSoilTemperaturesandBuildingLoadCharacteristicsonGroundSourceHeatPumpSystemSONGHu-wei1LIUJin-xiang1CHENXiao-chun2ZHANGJian2DINGGao21.NanjingUniversityofTechnologyNanjing210009China2.ChinaArchitectureDesign＆ResearchGroupBeijing100044ChinaAbstractBasedontheCFDmodelofgroundsourceheatpumpindifferentareasinChinaandaccordingtothesoilinitialtemperatureandthermalpropertiessoilheatexchangecapacitiesandinletandoutlettemperaturedifferencesofburiedpipeunderdifferentconditionswerediscussed.Andthenwiththeenvelopeparametersthecooling/heatingloadsofanofficebuildingweresimulatedwiththesoftwareofDeST.Furthermoretheinfluencesofbuildingloadcharacteristicsongroundsourceheatpumpsystemwereanalyzed.Asaresultconsideringoftheefficiencyofheatpumpandsoilheatbalancetheheatingandair-conditioningsysteminlowlatitudeareasshouldnotonlydependonthegroundsourceheatpumpauxiliarycold/heatsourceshouldbeadopted.Keywordsgroundsourceheatpumpsoilinitialtemperaturebuildingloadcharacteristicsheatbalance2010-03-162010-04-15“”[e-mail]1。1kW3kW。、。。。。4、、、、。822.1ANSYSCFDFLUENT6.31-2U。DeST。UU、。2.2divU=01ρφt+divρUφ=divΓφgradφ+Sφ2ρUφu、v、w、T、KεΓφSφ。2.3100mU40m×40m。U1。UU。。1U2.4U。23。。。1.2。23U3mmU。U。2.532.5.1U49626X=0mTX=0m=Tsoil3X=40mTX=40m=Tsoil4Y=0mTY=0m=Tsoil5Y=40mTY=40m=Tsoil6TsoilXY3。2.5.2UZ=－100mqZ=－100m=07ZqZ=－100m100m。2.5.3UZ=0mqZ=0m=082.6。k－ε。QUICKSIMPLE。。33.133℃12～22℃6。1。3.215d。45、。1PE/mm32/mm3/mm30/mm110/m100/℃12～22/m/s0.5/W/m·K2.0/W/m·K2.1/W/m·K0.5。。、。4U5、22℃35W/m、1.5℃。5℃。07867、。6U7、216～20℃1.42～0.81。1a。2/℃121416182022/W/m62.6456.6750.744.7438.7732.81/W/m23.8629.8335.7941.7547.7253.69/2.6251.9001.4171.0720.8120.6114、、3T=15.73+0.739×－0.046×－0.143×－0.001×。43。216～20℃1.41～0.81。。3/℃13.9618.7923.5710.3244.1。。。4.2DeST8。84.34。《》GB50189-200555。40.1820.160.100.170.100.122.01/m2/10.817265/W/m2·K/m2·K/W0.50.453.21.80.60.553.51.52.00.704.71.21.50.906.51.04.49～124。、COP。Q1′=Q1×1+1COP()19Q2′=Q2×1－1COP()210Q1′、Q2′Q1、Q2COP1、COP23.552.86。964437.5。101112。6kWh/233356.8350083.4299091.1225053.61.33299371.1217740.2383701.0139975.82.74436061.8168860.5558896.1108553.25.1547315125159606432.916173.637.527854《》GB50189-20051。16～20℃、1.41～0.81。2DeST。。3。7-9。4DeSTCFD、。1Fluentinc.Fluent6.3User'sGuideM.2Fluentinc.GAMBIT2.3DocumentationM.3.UD.2009.4.J.20094911～8.5.GB50189-2005S.2005.6.J.200734252～54.7.J.2004285～86.8.J.200524466～70.9.J.20093966～11.37