【英文标准名称】:Glassinbuilding-Determinationofthermaltransmittance(Uvalue)-Calculationmethod
【原文标准名称】:建筑玻璃.热传递系数(U值)测定.计算方法
【标准号】:BSEN673-1998
【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】:涂覆的;热防护;测定;建筑;符号;窗;建筑物用玻璃;额定值;计算方法;U值;数学计算;特性;热阻;玻璃;隔热;热传递系数;热传递;门窗玻璃
【英文主题词】:Coated;Construction;Definition;Definitions;Determination;Glass;Glassforbuildingpurposes;Glazing;Heattransmission;Mathematicalcalculations;Methodsofcalculation;Properties;Ratings;Symbols;Thermalinsulation;Thermalprotection;Thermalresistance;Thermaltransmissioncoefficient;U-values;Windows
【摘要】:ThisEuropeanStandardspecifiesacalculationmethodtodeterminethethermaltransmittanceofglazingwithflatandparallelsurfaces.ThisEuropeanStandardappliestouncoatedglass(includingglasswithstructuredsurfaces,e.g.patternedglass),coatedglassandmaterialsnottransparentinthefarinfrared,whichisthecaseforsodalimesilicateglassproducts(calledhereaftersodalimeglass),borosilicateglassandglassceramic.Italsoappliestomultipleglazingcomprisingsuchglassesand/ormaterials.Itdoesnotapplytomultipleglazingwhichincludeinthegasspacesheetsorfoilsthatarefarinfraredtransparent.TheprocedurespecifiedinthisEuropeanStandarddeterminestheUvalue(thermaltransmittance)inthecentralareaofglazing.Theedgeeffectsduetothethermalbridgethroughthespacerofasealedglazingunitorthroughthewindowframearenotincluded.Furthermore,energytransferduetosolarradiationisnottakenintoaccount.ThedocumentforthecalculationoftheoverallUvalueofwindows,doorsandshutters(seeC.1)makesnormativereferencetotheUvaluecalculatedfortheglazingcomponentsaccordingtothisstandard.Forthepurposeofproductcomparison,averticalpositionoftheglazingisspecified.InadditionUvaluesarecalculatedusingthesameprocedureforotherpurposes,inparticularforpredicting:—heatlossthroughglazing;—conductionheatgainsinsummer;—condensationonglazingsurfaces;—theeffectoftheabsorbedsolarradiationindeterminingthesolarfactor(seeC.2).ReferenceshouldbemadetoC.4andC.5orotherEuropeanStandardsdealingwithheatlosscalculationsfortheapplicationofglazingUvaluesdeterminedbythisstandard.Aprocedureforthedeterminationofemissivityisalsogiven.Theruleshavebeenmadetobeassimpleaspossiblewhilstremainingconsistentwithaccuracy.note:1)Insomecountriesthesymbolkhasbeenuseduptonow.
【中国标准分类号】:Q33
【国际标准分类号】:81_040_20
【页数】:18P;A4
【正文语种】:英语

标准名称：	花生茎蔓栽培双孢蘑菇安全优质生产技术规程
发布部门：	山东省质量技术监督局
发布日期：	2008-12-02
实施日期：	2009-01-01
首发日期：
作废日期：
出版社：	中国标准出版社
出版日期：	2009-01-01

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