Energy-Saving Reconstruction Research of Old Buildings in Hot Summer and Cold Winter Regions

By investigating and analyzing the building envelope and energy consumption of old buildings in hot summer and cold winter regions in China, and with applying integrated passive energy-saving methods, the article puts forward several reasonable and practical energy saving strategies for old teaching buildings. Three aspects are examined, namely the transformation of solar window, the transformation of external wall insulation and the transformation of eco-roof, following the renovation of No.7 Teaching Building in Chongqing University.