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中文摘要：
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.
英文摘要：
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.
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