development and utilization of shallow geothermal energy at home and abroad

《development and utilization of shallow geothermal energy at home and abroad》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

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