重庆自然通风热舒适模型的建立及热环境评价

在分析国内外自然通风热舒适研究的基础上,结合重庆地区潮湿的气候特点,对现有自然通风热舒适评价模型进行了湿度修正.采用电子温湿度记录仪对重庆地区村镇典型住宅的室内外热湿参数进行了全年监测,并利用该模型对村镇住宅的室内热环境进行了评价.分析表明,村镇住宅室内和室外相对湿度高于70％的时间分别占全年总时间的95.4％和87.2％,室内温度高于28℃且相对湿度高于70％的时间达1 196 h；全年舒适时间为3 838 h,占全年总时间的43.8％；现有评价模型与修正模型的舒适时间相差405 h,其中空调季相差342h,且温度越高,相对湿度对热舒适的影响越大,说明在温度较高时应考虑相对湿度对热舒适的影响,但修正模型的可靠性还需进一步验证.

Establishment of thermal comfort model and evaluation of thermal environment for natural ventilated buildings in Chongqing

Based on the analysis of previous researches on thermal comfort for naturally conditioned spaces at home and abroad,presents an improved evaluation model by considering the humid climate characteristics in Chongqing.Monitors the indoor and outdoor thermal parameters of a village residence in the whole year using electronic temperature and humidity recorders,and evaluates the indoor thermal environment with the model.Analysis results show that the ratios of the hours of indoor and outdoor relative humidity exceeding 70% to the total hours of the whole year account for 95.4% and 87.2% respectively,and the hours of indoor temperature above 28 ℃ and relative humidity exceeding 70% are 1 196 hours.The comfortable hours of the whole year are 3 838 hours,accounting for 43.8% of the total hours.The difference between the comfortable hours obtained by the model and existing model is 405 hours in the whole year and 342 hours in the cooling season.The higher the temperature,the greater the effect of relative humidity on thermal comfort is.So the relative humidity should not be ignored at high temperature,but the reliability of the improved model needs further examination and validation.