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据一些资料分析,我国建筑能耗(包括建材生产用能和现场施工用能以及建筑日常采暖等用能)约占国家总能耗的25～40％,能源的浪费相当严重。据统计,北京市仅冬季四个月,集中采暖住宅建筑耗煤为23.1～24.l公斤/米~2,火炉采暖的住宅建筑耗煤为47公斤/米~2(煤的发热量Q_H=4000千卡/公斤)。而欧美十国住宅采暖空调全年能耗量为标煤23.8公斤/米~2。国外一些学者通过计算分析认为,在相同居住面积和采暖温度下,北京市住宅的采暖能耗为美国住宅采暖能耗的2～3倍。找市住宅的采暖耗煤多,主要是由于锅炉效率低、热网管道热损失大以及围护结构
According to some data analysis, China’s building energy consumption (including energy for building materials, energy for on-site construction, and daily energy consumption for buildings) accounts for about 25% to 40% of the country’s total energy consumption, and energy waste is quite serious. According to statistics, Beijing is only four months in winter, and the coal consumption for centralized heating residential buildings is 23.1 to 24.1 kg/m2, and the coal consumption for residential buildings heated by stoves is 47 kg/m2 (coal heating value Q_H= 4000 kcal/kg). The total energy consumption of residential heating and air-conditioning in the ten European and American countries is 23.8 kg/m2 for standard coal. Some foreign scholars have calculated and analyzed that in the same living area and heating temperature, Beijing’s residential heating energy consumption for the United States residential heating energy consumption of 2 to 3 times. Finding more residential heating coal consumption is mainly due to the low boiler efficiency, heat loss of the heat network pipeline, and the containment structure