湿热地区农村住宅地面的防潮和热工性能

湿热地区农村住宅存在室内潮湿问题,地面发生凝结泛潮现象,影响室内居住品质和居民的身体健康。控制地面凝结的基本途径是提高地面温度,这就需要确定农村住宅地面防潮的热工性能。以重庆农村住宅为例,对室内热湿参数和地面温度进行了实测分析,通过建立农村住宅模型,对普遍使用的架空地面和保温地面的防潮功能进行了模拟分析。结果显示:架空地面防潮效果显著,可减少地面凝结时数90%以上,基于架空地面的防潮效果被广泛接受。提出农村住宅保温地面防潮的低限热阻为0.5m~2·K/W。

Thermal performance of ground anti-condensation in rural residence in hot and humid areas

There are humidity problems in rural residence in hot and humid areas and condensation occurred on the ground,which affects indoor living quality and health of residents.The basic way to control the ground condensation is to improve the ground temperature,and to determine the thermal performance of the ground.In this paper,thermal and moisture parameters as well as ground temperature of rural residence in Chongqing were measured and the rural residence model was established for simulating damp proof function of overhead ground and insulation ground.The results show that the effect of overhead ground on the damp proof is significant.It could reduce the time of condensation on the ground by more than 90％.Based on the fact that the effect of overhead ground on damp proof is widely accepted,it is proposed that the low thermal resistance of insulation ground for damp proof is 0.5 m2 · K/W.