严寒地区建筑不同围护结构传热传湿问题分析

ANALYSIS OF HEAT AND MOISTURE TRANSFER IN DIFFERENT ENVELOPE IN SEVERELY COLD REGIONS

由于室内外的水蒸汽的分压力的不同,从而使得水蒸气在围护结构内得以传递,此时,在保温层与外侧密实材料的交界处就有可能会出现受潮的现象。而保温层内的湿增量如果超过了标准所规定的允许增量之后,就会对保温层造成破坏,造成保温能力的下降,甚至有可能造成保温层的脱落,尤其室内泳池等高温高湿环境下,围护结构的构造对于热湿传递的影响更为明显。因此本文通过采用控制变量的方法计算分析了某会所室内泳池围护结构外墙体构造变化对墙体的传热性能及冷凝增湿的影响大小,以供相关工程设计进行参考。

Based on the indoor and outdoor water vapor partial pressure difference,which makes water vapor within the building envelope to be delivered,this time,the junction of the insulating layer and the outer dense material may appear damp phenomenon.If the wet increment of the insulation layer is more than the allowed margin which is under the standard increment,the damage will be caused to the insulation layer,resulting in a decline in heat capacity,even resulting in loss of insulation.Especially for indoor swimming pools and other high temperature and humidity environments,the influence of enclosure structure on heat and moisture transfer is more obvious.Therefore,by using the control variable method,the influence of the wall structure change on the heat transfer performance and the condensation humidification of the outside wall of a swimming pool is calculated and analyzed in this paper,so as to provide reference for the design of the related engineering.