【英文标准名称】:Glassinbuilding-Determinationofthermaltransmittance(Uvalue)-Heatflowmetermethod
【原文标准名称】:建筑玻璃.热传递系数(U值)测定.热流计法
【标准号】:BSEN675-1998
【标准状态】:作废
【国别】:英国
【发布日期】:1998-06-15
【实施或试行日期】:1998-06-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:隔热;玻璃;试样制备;试验设备;热阻;热量测量;报告;校正;试样;热传递系数;建筑系统构件;双层玻璃;密封单元;数学计算;多倍;热测量;热传递;门窗玻璃
【英文主题词】:Construction;Determination;Glass;Glassforbuildingpurposes;Glazing;Heattransmission;Measurement;Measuringinstruments;Measuringtechniques;Multiple;Multipleglazing;Thermalinsulation;Thermalprotection;Thermalresistance;U-values;Windows
【摘要】:ThisEuropeanStandardspecifiesameasurementproceduretodeterminethethermaltransmittanceofglazingwithflatandparallelsurfaces.Structuredsurfaces,e.g.patternedglass,maybeconsideredtobeflat.ThisEuropeanStandardappliestomultipleglazingwithouterpaneswhicharenottransparenttofarinfraredradiation,whichisthecaseforsodalimesilicateglassproducts(calledhereaftersodalimeglass),borosilicateglassandglassceramics.InternalelementscanbefarinfraredtransparentTheprocedurespecifiedinthisEuropeanStandarddeterminestheUvalue(thermaltransmittance)inthecentralareaofglazing.Theedgeeffectsduetothethermalbridgethroughthespacerofasealedglazingunitorthroughthewindowframearenotincluded.Furthermore,energytransferduetosolarradiationisnottakenintoaccount.ThedocumentforthecalculationoftheoverallUvalueofwindows,doorsandshutters(seeA.1)givesnormativereferencetotheUvalueevaluatedfortheglazingcomponentsaccordingtothisstandard.Forthepurposesofproductcomparison,averticalpositionoftheglazingisspecified(seeclause10).Uvaluesevaluatedaccordingtothepresentstandardareusedforproductcomparisonaswellasforotherpurposes,inparticularforpredicting:—heatlossthroughglazing;—conductionheatgainsinsummer,—condensationonglazingsurfaces;—theeffectsoftheabsorbedsolarradiationindeterminingthesolarfactor(seeA.2).ReferenceshouldbemadetoA.3,A.4orotherEuropeanStandardsdealingwithheatlosscalculationsfortheapplicationofglazingUvaluesdeterminedbythisstandard.Thedeterminationofthethermaltransmittanceisperformedforconditionswhichcorrespondtotheaveragesituationforglazinginpractice.note:1)Insomecountriesthesymbolkhasbeenusedhitherto.
【中国标准分类号】:Q33
【国际标准分类号】:81_040_20
【页数】:12P;A4
【正文语种】:英语