현지 측정에 의한 남한지역의 지중유효열전도도, 보어홀 전열저항 및 초기온도 분석
Analysis of Soil Thermal Conductivities, Borehole Thermal Resistances and Initial Soil Temperature with In-Situ Testing in South Korea
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초록
Investigationoftheeffectivesoilthermalconductivity()isthefirststepindesigning thegroundloopheat exchanger(borehole)ofa geothermalheatpump system.Anotherimportantfactoris the borehole thermal resistance().Thermalresponsetestsofferagoodmethodtodeterminethegroundthermalpropertiesforthetotal heattransportintheground.Thefirststepismeasuredforinitialsoiltemperature.Thisisdonebysupplyinga onlypumppowerintoaboreholeheatexchanger.Theyneedtosupplyintowaterunloadheatpowermorethan 30minutes. Inthisstudy,theinitialsoiltemperaturewasfoundtoanalysis14.1∼16.0℃,theratiowas68.7%represented.Inthiscaseof,was2.1∼3.0, was0.11∼0.20.Inthiswork,itisalsoshownthat thedistributionofasoilthermalconductivityandboreholethermalresistancewereontheinfluenceofinitialsoil temperature.Andsoilthermalconductivitywasrelatedwithfactorsofequationbylinearleastsquaremethod,boreholethermalresistancewasontheinfluenceofcompositefactors.
Abstract
Investigationoftheeffectivesoilthermalconductivity()isthefirststepindesigning thegroundloopheat exchanger(borehole)ofa geothermalheatpump system.Anotherimportantfactoris the borehole thermal resistance().Thermalresponsetestsofferagoodmethodtodeterminethegroundthermalpropertiesforthetotal heattransportintheground.Thefirststepismeasuredforinitialsoiltemperature.Thisisdonebysupplyinga onlypumppowerintoaboreholeheatexchanger.Theyneedtosupplyintowaterunloadheatpowermorethan 30minutes. Inthisstudy,theinitialsoiltemperaturewasfoundtoanalysis14.1∼16.0℃,theratiowas68.7%represented.Inthiscaseof,was2.1∼3.0, was0.11∼0.20.Inthiswork,itisalsoshownthat thedistributionofasoilthermalconductivityandboreholethermalresistancewereontheinfluenceofinitialsoil temperature.Andsoilthermalconductivitywasrelatedwithfactorsofequationbylinearleastsquaremethod,boreholethermalresistancewasontheinfluenceofcompositefactors.
참고문헌 (8)
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