夹心保温墙体内部结露问题的模拟分析

Simulation analysis of moisture condensation in sandwich insulating wall

在考虑建筑材料传热、传湿物性值随其自身温湿状态而变化的前提下,分别在严寒、寒冷、夏热冬冷及夏热冬暖4个典型地区的气象年内,对"三明治"式夹心保温墙体的内部结露情况进行了模拟计算。指出在严寒及寒冷地区采用这种保温方式的墙体存在发生内部结露甚至冻胀的危险,该结论对工程应用具有重要的参考价值。

In considering the properties （heat transfer property and wet transfer property） vary with the temperature and moisture condition of construction material itself, the internal condensation conditions in sandwich insulating wall are simulated and calculated under four typical areas in a typical meteorological year, i.e. extreme cold area, cold area, hot summer and cold winter area and hot summer and warm winter area. It is pointed out that in cold and extreme cold area there is an internal condensation, even the danger of freezing up in this kind of wall. The conclusion has an important referential value for engineering application.