局部供暖条件下农村居住建筑能耗的影响因素

Factors Affecting Energy Consumption of Rural Residential Buildings Under Local Heating Conditions

中国北方农村地区,建筑围护结构热工性能普遍较差,因受地理位置和气候特点的影响,实现全面供暖能耗巨大。通过建立农村居住建筑能耗模型,并进行数值计算,研究位于潍坊市的农村居住建筑的冬季能耗。研究显示:选择向阳面房间供暖时,能耗变化率最大;选择背阳面房间供暖时,能耗变化率最小,两者相差23%。供暖区域面积明显影响农村居住建筑能耗,增加供暖区域面积,能耗随室内温度升高而明显增大,每增加一个供暖房间,日能耗增加30%~40%。

In rural areas of northern China,the thermal performance of building envelopes is generally poor.Due to the influence of geographical location and climate characteristics,the energy consumption of comprehensive heating is huge.Through the establishment of a rural residential building energy consumption model and numerical calculations,the winter energy consumption of rural residential buildings in Weifang City was studied.The results showed that when a room with a sun facing side was selected for heating,the energy consumption change rate was the largest;When the room without a sunny side was selected as the heating room,the change rate was the smallest the difference of change rate was 23%.The energy consumption of rural residential buildings was significantly affected by the area of heating area.With the increase of heating area,the energy consumption increased significantly with the increase of indoor temperature and each additional heating room increased the daily energy consumption by 30%to 40%.