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1、DevelopmentandUtilizationofShallowGeothermalEnergyatHomeandAbroad 【Abstract】Asanewefficientandenvironmentallyfriendlyalternativeenergy，shallowgeothermalenergyplayedanvitalroleandhasenteredagoldenperiodofdevelopment. 【Keywords】Shallowgeothermalenergy；Development；Utilization 1Thecharacteristic
2、sofshallowgeothermalenergy Theearth'ssurfaceisahugenaturalreservoir，thesolarenergyisequivalentto2000timestheworld'senergyconsumption.Intherangeof10mtothegroundsurface，thesurfacetemperatureisinfluencedbytheatmosphericenvironmentThesurfacetemperatureisconstant，whichisnotinfluencedbytheatmospheri
3、cenvironment.Shallowgeothermalenergyisthethermalenergy[1]，whichcontainsthevalueofthedevelopmentandutilizationofthesoil，groundwaterandsurfacewaterinacertaindepth（generally200m）.Shallowgeothermalenergyisakindofheatenergy.Itisapartofgeothermalresources.Shallowgeothermalenergydevelopmenttechnologyi
4、sincreasinglymature.Ithasbeenwidelyusedinheatingandcooling.What’smoreitisaverygood4alternativeenergyandcleanenergy.Shallowgeothermalenergyisalsoknownastheshallowgeothermalenergy[2].Itsenergymainlycomesfromthesolarradiationandtheearthgradient.Theshallowgeothermalenergycanbereferredtoasrenewablee
5、nergy，cleanenergy，nonfuelenergy，newenergy，processenergy，lowgradeenergyandnoncommodityenergyaccordingtoaccordingtodifferentclassificationmethods[3]. 2Thestudyofgroundsourceheatpump Intheworldgeothermalcanbedirectlyused.Inrecentyears，thedevelopmentandapplicationofgroundsourceheatpumpisprominent
6、inshallowlayergeothermalenergy.Theinstalledcapacityandutilizationofenergyhaverapidlygrownatthespeedofmorethan20%.Thetechnologywasadaptedtotheneedsofhighefficientenergysavingandenvironmentprotectionandeconomy，generallyapplicable.ThehistoryofgroundsourceheatpumpcanbetracedbacktoapatentofSwitzerla
7、ndin1912，butthegroundsourceheatpumpisanewtechnology.Itwasusedinthemiddleof1980s. 3GeneralsituationofshallowgeothermalenergyresearchinChina Chinahasagoodheatpumpresearchandapplicationbasis，asearlyasin1950s，TianjinUniversitywascar
