間歇運行工況下的土壤源熱泵的運行性能研究.pdf

1、南京理工大學碩士學位論文間歇運行工況下的土壤源熱泵的運行性能研究姓名：黃伙軍申請學位級別：碩士專業(yè)：供熱、供燃氣、通風及空調工程指導教師：張少凡20090601Abstract碩士論文AbstractGroundsourceheatpump(GSHP)airconditioningsystemsutilizesoilasacoldorheatsource，achieveheattransferbetweensoilandaworking

2、fluidcirculatinginaclosedloopburiedintheground，andthenprovidethecoldandheatenergybyheatpumpComparedwiththeconventionalairconditioningsystem，TheGSHPboaststhefeaturesofprotectingenvironmentandenergysavingIthasbecomeapopula

3、rwayofairconditioningabroadHowever，ourcountryisinthecourseofresearchandapplicationTherefore，IthasgreatdevelopmentpotentialThisthesisfocusesonverticaldoubleUtubeheatexchangeraccordingtotheheattransfercharacteristicsofdoub

4、leU—tubeburiedheatexchangerBuildthetransientheattransfermodelSimulatethesoiltemperaturedistributionsurroundingtheburiedheatexchangerundertheintermittentoperatingconditionofGSHPwithVBprogramTheresultsshowthatthechangeofso

5、iltemperatureisdifferentindifferentdepthsanddifferentradialdistanceThechangeofsoiltemperatureisbigneartoburiedheatexchangerwallHowever，Thesoiltemperatureawayfromtheheatexchangerwalldoesn’tchangesignificantlyAtthesametime

6、，wegetthedataofoperatinginwinterandbothinsummerbyexperimentBycomparingthedataofexperimentwimthedataoftheoryitscorrectnesscanbeverifiedUsetheheatfluxofpermeterandtheaverageheattransfercoefficientasthestandardofevaluation，

7、givethecomparisonbetweenintermittentoperationconditionandcontinuousoperationconditionMeanwhile，thecorrespondingcurvesareprovided，whichcanlaythefoundationforfurtherresearchKeywords：GSHPdoubleUtubes，numericsimulation，inter