【英文标准名称】:StandardPracticeforCalculationofPhotometricTransmittanceandReflectanceofMaterialstoSolarRadiation
【原文标准名称】:材料对太阳能辐射的光度透射比及反射比计算的标准实施规程
【标准号】:ASTME971-1988(2003)
【标准状态】:现行
【国别】:
【发布日期】:1988
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E44.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:数量估计;反射;太阳能;传输;太阳辐射;材料;光度测定
【英文主题词】:clerestories;fenestration;glazingmaterials;photometricreflectance;photometrictransmittance;skylights;solarradiation;windows
【摘要】:Glazedaperturesinbuildingsarecommonlyutilizedforthecontrolledadmissionofbothlightandsolarradiantheatenergyintothestructure.Otherdevicesmayalsobeusedtoreflectlightandsolarradiantheatintoabuilding.5.1.1Mostofthesolarradiantenergyenteringabuildinginthismannerpossesseswavelengthsthatliebetween300and2500nm(3000to25000E).Onlytheportionbetween380and760nmisvisibleradiation,however.Indaylightingapplications,itisthereforeimportanttodistinguishthesolarradiantenergytransmittanceandreflectanceofthesematerialsfromtheirluminous(visualorphotometric)transmittanceandreflectance.Forcomparisonsoftheenergyandilluminationperformancesofbuildingfenestrationsystemsitisimportantthatthecalculationormeasurement,orboth,ofsolarradiantandluminoustransmittanceandreflectanceofmaterialsusedinfenestrationsystemsusethesameincidentsolarspectralirradiancedistribution.5.2.1Solarluminoustransmittanceandreflectanceareimportantpropertiesindescribingtheperformanceofcomponentsofsolarilluminationsystems(forexample,windows,clerestories,skylights,shadingandreflectingdevices)andotherfenestrationsthatpermitthepassageofdaylightaswellassolarenergyintobuildings.Thispracticeisusefulfordeterminingtheluminoustransmittanceandreflectanceofglazingmaterialsanddiffuselyorquasi-diffuselyreflectingmaterialsusedindaylightingsystems.Fortheresultsofthispracticetobemeaningful,inhomogeneitiesorcorrugationsinthesamplemustnotbelarge.TestMethodE1175(orTestMethodE972)isavailableforsheetmaterialsthatdonotsatisfythiscriterion.1.1Thispracticedescribesthecalculationofluminous(photometric)transmittanceandreflectanceofmaterialsfromspectralradianttransmittanceandreflectancedataobtainedfromTestMethodE903.1.2Determinationofluminoustransmittancebythispracticeispreferredovermeasurementofphotometrictransmittancebymethodsusingthesunasasourceandaphotometerasdetectorexceptfortransmittingsheetmaterialsthatareinhomogeneous,patterned,orcorrugated.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F12
【国际标准分类号】:27_160
【页数】:4P.;A4
【正文语种】: