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1、SolarthermalenergyFromWikipedia,thefreeencyclopediaJumpto:navigation,searchSolarthermalenergy(STE)[1]isatechnologyforharnessingsolarenergyforthermalenergy(heat).SolarthermalcollectorsaredefinedbytheUSAEnergyInformationAdministrationaslow-,medium-,orhigh-temperaturecollectors.Lowtemperatur
2、ecollectorsareflatplatesgenerallyusedtoheatswimmingpools.Medium-temperaturecollectorsarealsousuallyflatplatesbutareusedforcreatinghotwaterforresidentialandcommercialuse.Hightemperaturecollectorsconcentratesunlightusingmirrorsorlensesandaregenerallyusedforelectricpowerproduction.STEisdiffe
3、rentfromphotovoltaics,whichconvertsolarenergydirectlyintoelectricity.Contents[hide]·1Low-temperaturecollectorso1.1Heating,cooling,andventilationo1.2Processheat·2Medium-temperaturecollectorso2.1Cooking·3High-temperaturecollectorso3.1Systemdesigns§3.1.1Parabolictroughdesigns§3.1.2Powertower
4、designs§3.1.3Dishdesigns§3.1.4Fresnelreflectors§3.1.5LinearFresnelReflector(LFR)andcompact-LFRTechnologies§3.1.6Fresnellenses§3.1.7MicroCSP·4Heatexchange·5Heatstorageo5.1Steamaccumulatoro5.2Moltensaltstorageo5.3Graphiteheatstorageo5.4Phase-changematerialsforstorage·6Conversionratesfromsol
5、arenergytoelectricalenergy·7Levelisedcost·8Standards·9Seealso·10References·11Externallinks[edit]Low-temperaturecollectorsOfthe21,000,000 squarefeet(2,000,000 m2)ofsolarthermalcollectorsproducedintheUnitedStatesin2006,16,000,000 squarefeet(1,500,000 m2)wereofthelow-temperaturevariety.[2]Lo
6、w-temperaturecollectorsaregenerallyinstalledtoheatswimmingpools,althoughtheycanalsobeusedforspaceheating.Collectorscanuseairorwaterasthemediumtotransfertheheattoitsdestination.[edit]Heating,cooling,andventilationMainarticles:HVAC,Solarheating,Thermalmass,Trombewall,Solarchimney,andSolarai
7、rconditioningMIT'sSolarHouse#1builtin1939usedseasonalthermalstorageforyearroundheating.IntheUnitedStates,heating,ventilation,andairconditioning(HVAC)systemsaccountforover25percent(4.75EJ)oftheenergyusedincommercialbuildingsandnearlyhalf(10.1EJ)oftheenergyusedinresid
