论文部分内容阅读
建筑能耗包括建造能耗和使用能耗两个方面。由于建筑物的使用年限长达几十年,使用能耗要比建造能耗大得多,往往占建筑能耗的80~90%。在我国北方寒冷地区,建筑使用能耗中,又以供暖能耗占的比重为最大。要降低供暖能耗,就必须提高建筑物的保温水平。目前世界各国的建筑节能技术,就比较集中地注意改善建筑物的保温功能。现在就此问题,结合我国北方的实际情况进行分析,并提出一些适用技术,供参考。一、现状的分析对比我国城市的采暖燃料主要是煤炭。在寒冷地区,大中城市冬季采暖能耗很大,用煤数量很多,虽然基本上能够按定量及时供应,但采暖标准较低。我国规定,日平均温度不高于5℃的期间超过
Building energy consumption includes both energy consumption in construction and energy consumption. As the use of buildings lasts for decades, the use of energy is much greater than the energy consumption of construction, which often accounts for 80 to 90% of the energy consumption of buildings. In the cold regions of northern China, energy consumption of buildings is used, and the proportion of heating energy consumption is the largest. To reduce heating energy consumption, it is necessary to increase the insulation level of buildings. At present, building energy-saving technologies in various countries around the world are focusing on improving the insulation function of buildings. Now on this issue, we will analyze the actual situation in northern China and put forward some applicable technologies for reference. First, the analysis of the status quo Comparison of China’s urban heating fuel is mainly coal. In cold regions, large and medium-sized cities consume large amounts of energy in winter heating and use a large amount of coal. Although they are basically able to supply them in a timely manner, heating standards are low. Our country stipulates that the average daily temperature is not higher than 5°C during the period