长沙地区几种屋面隔热性能的测试研究

屋面的隔热性能对顶层住户夏季室内热环境影响很大,因此对几种常用屋面的实际隔热效果进行测试研究,具有实用价值。选择长沙市区某住宅小区两栋相邻的住宅,在2013年夏季按住宅屋面常用构造做法设置了几种实验模块,在外界条件、层高、墙体等都相同的情况下,连续测试各模块屋面的内表面温度、室内空气温度、室外空气温度并进行对比分析。结果表明:种植屋面的隔热效果最好;无隔热措施传统屋面的隔热效果较差,增设保温层后,其隔热效果有一定提高,如果外表面再刷白,隔热性能明显改善;通风屋面有一定的隔热效果,加设保温层后效果更好。

RESEARCH ON THERMAL INSULATION PERFORMANCE OF SEVERAL KINDS OF ROOFS IN CHANGSHA AREA

Roof insulation performance has a great influence on the indoor thermal environment of top householder in summer,so test research on the actual heat insulation effect of several common roofs is practical valuable. In the summer of 2013,two residential buildings were selected in a housing estate in downtown of Changsha. Several test modules commonly used for residential roofing construction practices were made,under the same external conditions,building floors, walls etc, and continuous testings were done for roof inner surface temperature, indoor air temperature,outdoor air temperature and a comparison analysis was carried out. The results showed that planting roofing insulation effect was of the best insulation effect and the traditional roof without heat insulation was poorer,after adding thermal insulation layer,the heat insulation effect was improved,if the outer surface was white-washed,heat insulation performance would be improved significantly. The ventilated roof had a certain insulation effect,after adding thermal insulation layer the effect was better.