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砂土地基中摩擦型能量桩群桩热力学特性研究（英文）.docx

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砂土地基中摩擦型能量桩群桩热力学特性研究（英文） ResearchonThermodynamicCharacteristicsofFrictionEnergyPileGroupinSandySoilFoundation Abstract: Groundsourceheatpumpsystemsarebecomingincreasinglypopularinenergy-efficientbuildingsystems.Frictionenergypilesareanimportantcomponentofgroundsourceheatpumpsystems,inwhichthepilesareusedbothforstructuralsupportandforheatexchangewiththesurroundingsoil.Inthisstudy,thethermodynamiccharacteristicsofafrictionenergypilegroupinsandysoilfoundationwereinvestigatedthroughfieldtesting,laboratorytesting,andnumericalsimulation.Theresultsshowedthatthethermalperformanceofthepilegroupwasaffectedbyavarietyoffactors,includingpile-soilthermalconductivity,pilediameter,pilespacing,pilelength,soilthermalconductivity,andsoilmoisturecontent.Theresearchprovidesinsightsintothedesign,installation,andoperationofgroundsourceheatpumpsystems. Introduction: Withtherapiddevelopmentofurbanizationandindustrialization,thedemandforenergyisincreasingdaybyday.However,thetraditionalenergysourcessuchascoalandoilhaveanegativeimpactontheenvironment.Therefore,itisessentialtodevelopnewandrenewableenergysourcesthatareenvironmentallyfriendlyandsustainable.Groundsourceheatpump(GSHP)systemshavegainedpopularityasanenergy-efficientsolutionforbuildingheatingandcoolingsystems.InaGSHPsystem,thegroundactsasaheatsourceinthewinterandasaheatsinkinthesummer. Frictionpilesareatypeofpilefoundationsystemcommonlyusedincivilengineeringconstruction.Thepilesrelyonthefrictionalresistancebetweenthepilesurfaceandsurroundingsoilforsupport.Moreover,thepileitselfcanbeusedasaheatexchanger,transferringheatbetweenthebuildingandthesoil.Asaresult,frictionenergypilescanperformdualfunctionsasbothstructuralsupportandheatexchangers,makingthemanessentialcomponentofGSHPsystems. Inthisstudy,thethermodynamiccharacteristicsofafrictionenergypilegroupinsandysoilfoundationwereinvestigated.Theresearchaimedtoexploretheimpactofvariousfactorsonthethermalperformanceofthepilegroup,providingatheoreticalbasisforthedesignandoperationofGSHPsystem