气候变化背景下内保温砖墙热湿性能对比

Hygrothermal performance comparison of internallyinsulated masonry walls under climate change

为量化气候变化背景下内保温砖墙的热湿性能,采用数值模拟软件WUFI Pro,对比湿气密闭性保温墙体、湿气透过性内保温墙体和未保温墙体,分析其在比利时鲁汶1种现状气候工况和2种未来气候工况下的冻融循环风险、霉菌滋生风险、热损失和湿负荷.结果表明,湿气透过性保温墙体与湿气密闭性保温墙体的冻融风险次数由现状气候工况下的6和2次升至未来气候工况下的16和13次,且含水率显著增高,而未保温墙体无风险.湿气密闭性保温墙体在3种工况下的霉菌滋生风险都显著高于其余2种墙体,且在未来气候工况下风险更高.含保温层墙体的能耗显著低于未保温墙体,湿气透过性保温墙体与未保温墙体在未来气候工况下需要更大的湿负荷.

To quantify the hygrothermal performance of internally insulated masonry walls under climate change,a numerical simulation software WUFI Pro was employed to analyze the frost damage risks,the mold growth risks,heat losses and moisture load of the internally insulated masonry walls with vapor-tight or vapor-open insulation materials and an uninsulated wall under one current and two future climate scenarios of Leuven,Belgium.The results indicate that the freeze-thaw risk occurrences of the walls with vapor-open and vapor-tight insulation increase from 6 and 2 under the current scenario to 16 and 13 under the future scenarios,with a significant increase in the moisture content,while no risks occur in the uninsulated wall.The vapor-tight insulated wall has a significantly larger mold growth risk than the others,particularly under the future climate scenarios.Insulation significantly reduces energy consumption,while both vapor-open insulated walls and uninsulated walls require higher moisture loads under future climate conditions.