厦门住宅夏季室内自然通风热环境实测与评价

摘要

以厦门市4户住宅的夏季室内风速和热环境实测为例,探讨从参数变化中获得房间自然通风时段;在此基础上,提出用累积分布预测平均热反应指标(PMVN)来评价房间自然通风条件下热环境的方法,统计分析所测房间自然通风下PMV值的大小及其出现概率.结果表明,房间的白天室内风速较大而夜间室内风速较小,但就PMV值而言,房间PMV值白天比夜间PMV值高,即房间热环境白天比夜间差.与门窗关闭处于自然状态同时段相比,夏季自然通风可明显使PMV值下降,从而不同程度地改善室内热环境.%The indoor natural ventilation and thermal environment were investigated by measuring various parameters of 4 residential buildings in Xiamen, to obtain the natural ventilation periods, then the method of predicted mean vote (PMVn) was proposed to evaluate the indoor thermal environment under natural ventilation, finally the values of PMV-index in different measured rooms were statically analyzed. The measured results show that: under natural ventilation, the air velocity in the measured room is high in daylight and is low at night, PMV-index in daylight is higher than the index ad night, that is, the indoor thermal environment is worse in the daytime than that at night; the natural ventilation can obviously lower the PMV value and improve the indoor thermal environment