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“建筑节能”的课题是70年代初世界能源发生危机后提出的。根据资料记载,世界大多数国家的建筑业消耗能源约占全国总能耗的20%～40%,它直接关系到各国能源的节约问题,所以得到一些发达国家的重视,并纷纷制定了国家的建筑节能规定和节能措施。建筑能耗包括建筑物的生产能耗、施工能耗、民生能耗(指住宅、公共建筑等的日常使用能耗);其中民生能耗约占2/3。因此,各国把建筑节能的重点放在建筑物的民生能耗上。
The topic of “Building Energy Conservation” was put forward after the world’s energy crisis in the early 1970s. According to the data, the construction industry in most countries consumes about 20% to 40% of the country’s total energy consumption. It has a direct bearing on energy conservation in various countries. Therefore, it has received the attention of some developed countries and has formulated national Building energy-saving regulations and energy-saving measures. The energy consumption of buildings includes the energy consumption of buildings, the energy consumption of construction, and the energy consumption of people’s livelihood (refers to the daily use energy of residential buildings, public buildings, etc.); among them, the energy consumption of people’s lives accounts for about 2/3. Therefore, all countries put emphasis on building energy conservation on the energy consumption of buildings.