摘要:
为探究中国西北地区新农村住宅冬季室内热环境状况,以甘肃省民勤县一户新农村住宅为研究对象,对农宅冬季太阳能联合燃煤锅炉供地暖房间室内热环境和室内空气质量进行了现场测试.研究得出:两日环境平均气温为-14.8 °C,最低温度为-24.9 °C的情况下,两日共烧煤 28.8 kg,折合标煤 16.5 kg,太阳能集热器向室内供热量399.71 MJ,折合标煤 13.6 kg,地板采暖房间平均温度均维持在 11.0 °C以上.地暖房间室内温度变化比较平稳,最大波幅仅4.5 °C,采暖房间具有良好的室内风环境和室内湿环境.地板采暖没有明显的温度分层现象,竖直方向上头和脚踝之间最大温差仅为0.6 °C,温度分布比较均匀,舒适性较高.联合供暖室内污染物 PM2.5、PM10、SO2质量浓度均符合室内空气质量要求.%In order to explore the condition of winter indoor thermal environment of new rural house in northwest area of China,a rural house in Minqin county,Gansu province was taken as the research object and an experimental research method was used to conduct on-the-spot measurement of the indoor thermal environment and indoor air quality in the rooms with incorporate heating of solar energy and coal-fired boiler in winter season.It was obtained by this research that when two-day average ambient temperature was -14.8 °C the lowest temperature was -24.9 °C,and 28.8 kg coal was burned in two days,equiva-lent to 16.5 kg standard coal,the room would gain 399.71 MJ heat from solar collectors,which equals to 13.6 kg of standard coal and temperature in rooms with floor heating would maintain at 11 °C and above. Temperature in fluctuation floor-heating rooms would be stable and its maximum amplitude would be only 4.5 °C,being a good air convectional environment and humidity environment indoors.There is no obvious temperature stratification in floor heating rooms,the maximum vertical temperature difference between head and ankle would be only 0.6 °C,and the temperature distribution would be relatively uniform and with higher comfortableness.The mass concentrations of indoor pollutants such as PM2.5,PM10,and SO2 would all agree with the indoor air quality requirements.