Energy saving rate and economic analysis of energy saving transformation technology of an office building in Shenzhen based on whole process

In order to quantitatively analyse the actual effect and economy of energy saving transformation technology of an office building in Shenzhen, based on the project cost data, field test energy consumption data and official power supply data, carries out energy saving rate analysis, economic analysis and sensitivity analysis of economic indicators from three aspects of the project itself, energy saving service company and each energy saving transformation technology. The analysis results show that, the energy saving rate of the air conditioning system is 12.5%, the energy saving rate of the lighting system is 11.2%, the energy saving rate of building operation and management is 2.9%, and the comprehensive energy saving rate is 26.6%. The main sensitive factors affecting the economic indicators of energy transformation project include comprehensive electricity price, energy saving rate and depreciation rate.