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1、建筑门窗玻璃幕墙传热系数现场测试研万成龙潘振王洪涛单波阎强王昭君中国建筑科学研究院建筑门窗玻璃幕墙是建筑围护结构节能最薄弱部位，其传热系数A前只能在实验室通过热箱法测定，在现场准确、快捷地测试该值对于建筑的节能评估改造具有重耍意义。在现场测试门窗幕墙内外空气温度和表面温度的基础上，推导出了基于“准稳态”测试原理和“热阻法”、“表面温度法”、“传热系数法”3种传热系数现场测试方法，现场测试值与实验室检测值的较高一致性表明了该现场测试方法的准确性，连续测试数据与平均值的较小偏差表明/该测试方法的稳定性。研宂结果表明，建筑门窗玻璃幕墙传热系数可通过该方法在现场准确、快捷地测试得
2、到。关键词：建筑门窗;玻璃幕墙;围护结构;传热系数;现场测试;建筑节能;评估;这基金：“十三五”国家重点研发计划课题“门窗系统节能性能提升技术研究”(2016YFC0700806)FieldTestMethodsonThermalTransmittanceofWindows,DoorsandGlassCurtainWallsWANCheng-longPANZhenWANGHong—taoSHANBoYANQiangWANGZhao-junChinaAcademyofBuildingResearch;Abstract：Windows,doorsandglasscurtain
3、wallsaretheweakestandcrucialenergy-savingcomponentofbuildingenvelope.Accordingtothecalculation,theheatlossofthewindowsanddoorsaccountsfor40%"50%oftheenclosurestructure,whichaccountsforabout1/4ofthebuildingenergyconsumption.Atpresent,insulationofwindowsanddoorsisobtainedonlythroughthecalib
4、rationhotboxmethodforthedeterminationofstabilitybasedontheheattransferprincipleinthelaboratoryinChina.Thereisnofieldtestmethodfortheheattransfercoefficientofwindows,doorsandglasscurtainwalls,whicharemainstructuralparts,theheattransfercoefficientofdomesticenvelopefieldtestmainlyconcentrate
5、dinthewall.Theaccurateandconvenientmeasurementoftheheattransfercoefficientofthewindows,doorsandglasscurtainwallshasimportantvalueforthedetectionandidentificationofthethermalinsulationperformanceofthenewwindows,doorsandglasscurtainwallsandtheenergy-savingdiagnosisoftheexistingwindows,doors
6、andglasscurtainwalls.Basedonthecalculationformulaofheattransfercoefficientofexternalwindowsanddoorsandglasscurtainwalls,combinedwiththeprincipleofheattransfer,thefieldtestmethodofheattransfercoefficientforwindows,doorsandglasscurtainwallsisdeduced,theverificationanalysisiscarriedout.Windo
7、ws,doorsandglasscurtainwallsarelightthin-walledmembers;theirthermalinertiaissmall,thepeakvalueoftheindoorairtemperature,theinnersurfacetemperaturecurveofglassandthewindowframechangingwithtime,whichisalmostconsistentwiththeoutdoorairtemperaturecurve，soitcanbeconsider
