夏熱冬冷地區(qū)建筑動態(tài)負荷下地埋管周圍土壤溫度變化及熱泵系統(tǒng)適用性研究.pdf

1、東南大學碩士學位論文夏熱冬冷地區(qū)建筑動態(tài)負荷下地埋管周圍土壤溫度變化及熱泵系統(tǒng)適用性研究姓名：任倩申請學位級別：碩士專業(yè)：動力工程及工程熱物理；制冷與低溫工程指導教師：錢華20120522東南大學碩士學位論文AbstractGroundsourceheatpump(GSHP)system，usedsoilasheatorcoldsource，hasbeenwidelyusedinvarioustypesofconstructionsin

2、recentyearsduetoitsenergysavingandenvironmentalprotection，etc，especiallyinhotsummerandcoldwinterzoneItissignificantforproperdesigningGSHPsystemtoobtainaccuratesoil’SthermalpropertiesThetemperatureofsoilsurroundingthepipe

3、sincreasedafterlongtimerunningduetotheimbalanceofbuildingheatingandcoolingloadinWinterandSummerwhichgreatlyinfluencedtheperformanceofGSHPIIladdition，differenttypesofheatpumpsystemhaddifferentapplicabilityandenergyefficie

4、ncyinsummerandcoldwinterregionSo，furtherstudyshouldbedonethroughenergysimulationandcomparativeanalysistoobtainsomereferencetoactualengineeringFirstlyonethesoiltheImalpropertiestestdeviceWasdesignedandmanufactured，andinsi

5、tutestsweresetuptoobtainsoilthermalpropertiesAtthesametimebecausethebackfillmaterialswerecomplicateda[1dhardtogetthermalproperties，anewcalculationmethodWasproposedtocalculatetheaveiagesoilthermaldiffusivitywithlackofbore

6、holebackfillthermalproperties；ResuitsshowedthattherelativeerrorbetweenthecalculatedoneandtestWas47％ItcouldbeseenthatthenewcalculationmethodWasfeasible，whichmightbeusedforpracticalengineeringSecondlybuildingloadinGmyang，C

7、hengdu，ChangshaandNanjingWascalculatedindependently晰thEnergyPlusprogramWithabovesoil’Sthermalpropertiesandbuildingload，oneproperheatpumpmodelWaSdeterminedThentheseresultswereimportedintothesoiltemperatureprogramdeveloped

8、byresearchgrouptoknowannualchangeofsoil[墨meantemperatureBesidestofurtherunderstandthechangeofsoiltemperatureaftershorttermnmning，selectedNanjingastheobjectareaassumedthatthesamebuildingindifferentfunctions，suchasshopping

9、malls，hotels，officebuildingsandresidentialbuildingsResultsshowedthatthecorrespondingannualaveragesoiltemperaturechangesdifferentlyhoweverallhadtheoverallupwardt1endseasonalfluctuationsintheprocess，andshowedacertainlagLas

10、tlytofurtherunderstandtheapplicationofGSHPsysteminhotsummerandcoldwinterzone，comparisonsweremadebetweentheGSHPsystemandtheairsourceheatpumpResultsshowedthatGSHPsystemhadbetterenergysavingadvantagesthantheairheatpumpsyste

11、minWinter；howevertheadvantageswerenotobviousinsummerWhenthecorrespondingundergroundpipelengthincreased，theenergysavingadvantagesWasbetterandatthesametime，theinitialcostwouldincreasegreatlyThroughthestudyofthissubjectprob

12、lemswerepromotedfortheusingofGSHPsystemindifferentcitiesanddifferentbuildingfunctionsinhotsummerandcoldwinterzoneBesides，comparisonsandanalysisweremadebetweentheGSHPsystemandairheatpumpintheaspectofapplication，whichmaygi