Scheme analysis of heat metering and energy efficiency retrofit for existing residential buildings in China’s northern heating region

Presents the retrofit schemes and the acceptance results, analyses item by item the retrofit content, and puts forward a comprehensive evaluation method of the retrofit effect. Compares and analyses the retrofit schemes of German and Poland and the “warm-house project” scheme of Jilin Province in China, and recommends the “warm-house project” scheme as the retrofit scheme of China’s northern heating region.