Abstract：
Energy-saving effects of a residential building of Qingnianhu Dongli Community and a residential building in Shanglong Xili Community in Dongcheng District of Beijing after energy-saving reconstruction are introduced, including physical property of heat-insulation materials, doors and windows for reconstruction, indoor and outdoor temperatures during heating in winter, heat consumption for heating and infrared thermographic inspection of facade, etc. According to the test results, energy consumptions for heating before and after reconstruction are compared and it is found that overall energy-saving reconstruction of existing residential building may save more than 30% energy.
