Interactions between the physical soil environment.pdf
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Interactions between the physical soil environment.pdf

Interactionsbetweenthephysicalsoilenvironmentandahorizontalground.pdf

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RenewableEnergy44(2012)141e153ContentslistsavailableatSciVerseScienceDirectRenewableEnergyjournalhomepage:www.elsevier.com/locate/reneneInteractionsbetweenthephysicalsoilenvironmentandahorizontalgroundcoupledheatpump,foradomesticsiteintheUKRaquelGarciaGonzaleza,b,*,AnneVerhoefa,d,PierLuigiVidaleb,d,BruceMaina,GuoguiGanc,YupengWucaDepartmentofGeographyandEnvironmentalScience,SchoolofHumanandEnvironmentalSciences,Whiteknightscampus,TheUniversityofReading,ReadingRG66DW,UKbNCAS-Climate,UniversityofReading,Reading,UKcInstituteofBuildingTechnology,UniversityofNottingham,Nottingham,UKdWalkerInstitute,UniversityofReading,ReadingRG66BB,UKarticleinfoabstractArticlehistory:ThereiscurrentlyanincreasedinterestofGovernmentandIndustryintheUK,aswellasattheEuropeanReceived1July2011CommunitylevelandInternationalAgencies(i.e.DepartmentofEnergy,AmericanInternationalEnergyAccepted10January2012Agency),toimprovetheperformanceanduptakeofGroundCoupledHeatPumps(GCHP),inordertoAvailableonline9February2012meetthe2020renewableenergytarget.AsoundknowledgebaseisrequiredtohelpinformtheGovernmentAgenciesandadvisorybodies;detailedsitestudiesprovidingreliabledataformodelKeywords:verificationhaveanimportantroletoplayinthis.InthisstudywesummarisetheeffectofheatRenewableenergyextractionbyahorizontalgroundheatexchanger(installedat1mdepth)onthesoilphysicalenvi-HorizontalgroundsourceheatpumpsSoilthermalpropertiesronment(between0and1mdepth)forasiteinthesouthoftheUK.OurresultsshowthattheslinkyflfiHeatextractioninuencesthesurroundingsoilbysignicantlydecreasingsoiltemperatures.Furthermore,soilmoistureCoefficientofPerformancecontentswerelowerfortheGCHPsoilprofile,mostlikelyduetotemperature-gradientrelatedsoilmoisturemigrationeffectsandadecreasedhydraulicconductivity,thelatterasaresultofincreasedviscosity(causedbythelowertemperaturesfortheGCHPsoilprofile).Theeffectsalsocausedconsid-erabledifferencesinsoilthermalproperties.ThisisthefirstdetailedmechanisticstudyconductedintheUKwitht