我国既有建筑存量大、能耗高,因此大力推进既有建筑节能改造是我国实施节能减排战略的重要任务之一。对此,国务院2007年在节能减排工作方案中提出“十一五”完成北方采暖地区既有居住建筑供热计量及节能改造1.5亿平方米的任务。 Since the existing buildings in our country have large stock and high energy consumption, it is one of the important tasks to implement energy conservation and emission reduction strategy in our country to promote energy-saving retrofitting of existing buildings. In response, the State Council in 2007 in the program of energy-saving emission reduction proposed “Eleventh Five-Year” to complete the heating of existing residential buildings in northern heating metering and energy-saving transformation of 150 million square meters of the task.