콤팩트형 태양열/지열히트펌프 하이브리드 냉난방 및 급탕 시스템 개발 및 성능분석
The Development and Performance Analysis of Compact Type Solar Thermal/Ground Coupled Heat Pump Hybrid System for Heating, Cooling and Hot water
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참고문헌
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초록
In this study,the compacttype solarthermaland ground coupled heatpump hybrid system forspace heating/coolingandhotwatersupplyhasbeendeveloped.Thishybridsystem wasinstalledinZeroEnergySolar House(ZeSH)in KIER forthedemonstration.Thethermalperformanceand operationalcharacteristicsofthis hybridsystem wereanalysedespecially.Theresultsareasfollows. (1)Thishybridsystem wasdesignedinordertoaddresstheexistingdisadvantagesofsolarthermal/ground coupledheatpumpsystem.Forthisdesign,allpartsexceptsolarcollectorandgroundcoupledheatpumpwere integratedintoasingleproductinafactory.Thecompacttypeunitincludestwobuffertanks,anexpansiontank,pumps,valves,acontroller,etc.Thissystem hasanadvantageofeasyinstallationwithsimpleplumbingwork eveninnarrow space.(2)Thethermalcharginganddischargingtimeofthebuffertanksanditscharacteristics by ground coupled heatpump,and heatpump COP according to geo-sourcetemperatureand bufferstorage temperaturehavebeenstudied.Thissystem wasfoundtomeetwelltotheheatloadwithoutanyotherauxiliary heatingequipment.(3)Theoperatinghoursofthegroundcoupledheatpumpasabackupdeviceofsolarthermal canbereducedsignificantlybyusingsolarheat.Itwasalsofoundthattheminimum heatingwatersupplysetting temperatureandmaximum coolingwatersupplysettingtemperaturemakeaninfluenceontheheatpumpCOP. Thelowerheatingwaterandthehighercoolingwatertemperature,thehigherCOP. Inthisrespect,thehybridsystem’sperformancecanbeimprovedinZeSH thanconventionalhouse.
Abstract
In this study,the compacttype solarthermaland ground coupled heatpump hybrid system forspace heating/coolingandhotwatersupplyhasbeendeveloped.Thishybridsystem wasinstalledinZeroEnergySolar House(ZeSH)in KIER forthedemonstration.Thethermalperformanceand operationalcharacteristicsofthis hybridsystem wereanalysedespecially.Theresultsareasfollows. (1)Thishybridsystem wasdesignedinordertoaddresstheexistingdisadvantagesofsolarthermal/ground coupledheatpumpsystem.Forthisdesign,allpartsexceptsolarcollectorandgroundcoupledheatpumpwere integratedintoasingleproductinafactory.Thecompacttypeunitincludestwobuffertanks,anexpansiontank,pumps,valves,acontroller,etc.Thissystem hasanadvantageofeasyinstallationwithsimpleplumbingwork eveninnarrow space.(2)Thethermalcharginganddischargingtimeofthebuffertanksanditscharacteristics by ground coupled heatpump,and heatpump COP according to geo-sourcetemperatureand bufferstorage temperaturehavebeenstudied.Thissystem wasfoundtomeetwelltotheheatloadwithoutanyotherauxiliary heatingequipment.(3)Theoperatinghoursofthegroundcoupledheatpumpasabackupdeviceofsolarthermal canbereducedsignificantlybyusingsolarheat.Itwasalsofoundthattheminimum heatingwatersupplysetting temperatureandmaximum coolingwatersupplysettingtemperaturemakeaninfluenceontheheatpumpCOP. Thelowerheatingwaterandthehighercoolingwatertemperature,thehigherCOP. Inthisrespect,thehybridsystem’sperformancecanbeimprovedinZeSH thanconventionalhouse.
참고문헌 (5)
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