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吸附剂粒径对吸附式制冷性能影响研究(英文).docx

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吸附剂粒径对吸附式制冷性能影响研究(英文) Abstract Theperformanceofadsorptionrefrigerationsystemsisinfluencedbyseveralfactors,amongwhichparticlesizeisanimportantparameter.Thisstudyfocusesontheeffectofadsorbentparticlesizeontheperformanceofadsorptionrefrigerationsystems.Theresearchwasconductedbycomparingtheexperimentalresultsoftwosamplesofactivatedcarbonwithdifferentparticlesizedistributionsunderidenticaloperatingconditions.Resultsshowedthattheadsorptioncapacityandcoefficientofperformance(COP)ofthesystemincreasedwithincreasingparticlesize.Theresultssuggestthatlargerparticlesizeadsorbentsaremoresuitableforuseinadsorptionrefrigerationsystems. Introduction Adsorptionrefrigerationisapromisingcoolingtechnologythathaspotentialtooffersignificantenergysavingsovertraditionalvaporcompressionsystems.Inadsorptionrefrigerationsystems,refrigerationisachievedthroughtheadsorptionofarefrigerantbyanadsorbentmaterial,whichthenreleasestherefrigerantuponheating.Theperformanceofadsorptionrefrigerationsystemsisinfluencedbyseveralfactors,includingthepropertiesoftheadsorbentandrefrigerant,systemdesign,andoperatingconditions.Amongthesefactors,theparticlesizedistributionoftheadsorbentsisanimportantparameterthatcaninfluencetheperformanceofadsorptionrefrigerationsystems. Adsorbentparticlesizecanaffectseveralkeypropertiesoftheadsorptionprocess,includingtheadsorptioncapacity,rateofadsorptionanddesorption,andheattransferefficiency.Ingeneral,largerparticlesizeadsorbentshaveahighercapacityforadsorbingrefrigerant,duetothelargersurfaceareaavailableforadsorption.However,largerparticlesmayalsoresultinlowerratesofadsorptionanddesorption,andreducedheattransferefficiency. Therehavebeenseveralstudiesexploringtheimpactofparticlesizeonadsorptionrefrigerationperformance.AstudybyZhangetal.(2014)foundthattheadsorptioncapacityofasilicageladsorbentdecreasedwithdecreasingparticlesize.AnotherstudybyParketal.(2017)reportedthatlargerparticlesizeactivatedcarbonresultedinhigherCOPinanadsorptionrefrigerationsystem.Theresultsofthesestudiessug