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1、第37卷第4期湖南大学学报(自然科学版)Vol.37,No.42010年4月JournalofHunanUniversity(NaturalSciences)Apr2010文章编号:1674-2974(2010)04-0011-06*建筑围护结构热湿耦合传递特性实验研究与分析陈友明,邓永强,郭兴国,张乐(湖南大学土木工程学院,教育部建筑安全与节能重点实验室,湖南长沙410082)摘要:建立了多层墙体热湿耦合传递的实验测试方法,测试了长沙地区1月份和7月份空调房间外墙体内的温湿度分布情况.分析
2、了热湿气候地区墙体内湿传递和积累的情况,以及不同内表面情况对墙体热湿性能的影响.实验结果表明:靠近室外侧水泥砂浆与红砖界面处的温度、湿度严重受室外温、湿度变化的影响,且此界面处的湿度长期高于80%,易引发霉菌的生长;靠近室内侧红砖与水泥抹灰界面处的温度、湿度主要受室内温、湿度的影响,变化较小;在夏季,内表面贴发泡塑料墙纸的墙体内各界面处的温、湿度普遍比没贴墙纸的墙体内相应位置处的要高;在冬季,两墙体内界面处的温度基本相同,但没贴墙纸的墙体内各界面处的湿度比内表面贴有发泡塑料墙纸的墙体要略高.同时,墙体内的温
3、、湿度变化存在着很强的耦合作用,并且太阳辐射强度对墙体内的温、湿度分布有很大的影响.关键词:建筑构件;热湿耦合传递;实验测试;围护结构中图分类号:TU111文献标识码:AExperimentalStudyofCoupledHeatandMoistureTransferPerformancethroughBuildingEnvelopeCHENYou-ming,DENGYong-qiang,GUOXing-guo,ZHANGLe(KeyLaboratoryofBuildingS
4、afetyandEnergyEfficiency,MOE,CollegeofCivilEngineering,HunanUniv,Changsha,Hunan410082,China)Abstract:Anexperimentmethodwasdevelopedtotesthygrothermaltransferperformancethroughmultilayerwall.Thetemperatureandrelativehumiditywasmeasuredintheexternalwallso
5、fanair-cond-itionedroominChangshainJanuaryandJuly.Themoistureaccumulationandtransferwithinthewallsex-posedtohotandhumidclimateswereanalyzed,anddifferentinsidewalltreatmentsimpactonthehygro-thermalperformanceofmultilayerwallwasalsodiscussed.Theresultsindica
6、tedthatthetemperatureandhumidityattheinterfacebetweenthecementmortarandredbrickwereseriouslyaffectedbythechangesofoutdoortemperatureandhumidity,andtherelativehumidityofthisinterfacewashigherthan80percentforalong-term.Thiscaneasilytriggerthegrowthofmold;the
7、temperatureandthehumidityattheinter-facebetweentheredbrickandcementplasteringhadsmallchanges;theywereaffectedbythechangesofindoortemperatureandhumidity;insummer,thetemperatureandthehumidityattheinterfaceofthewallontheinteriorsurfacewiththetreatmentoffoampl
8、asticwallpaperweregenerallyhigherthanthoseofthewallontheinnersurfacewithnotreatment;andinwinter,thetemperatureattheinterfaceoftwowallswasbasicallythesame,butthehumidityattheinterfaceofthewallthathavenotreatme
