Energy saving retrofit scheme and energy saving rate of an office building in Chongqing

Taking an office building in Chongqing as an example, calculates the subentry energy consumption values. Based on the energy saving diagnosis of lighting system, air conditioning system, power system and others, presents the energy saving retrofit scheme. Calculation result shows that the energy saving rate of the project is 21.45%. The economic analysis shows that the static investment payback period is 6.28 year without government subsidies and 3.3 years with government subsidies. The test results show that the scheme of the high efficient external window with energy saving membrane has a significant energy saving effect, with small impact on the construction.