Analysis of energy consumption status and energy efficiency potential in a department store of Guangzhou

This paper investigates and tests the unit floor area energy consumption and air-conditioning energy consumption of the comprehensive market building in Guangzhou,and analyzes the investigation results.The conclusion is that the energy consumption of unit floor area of the department store is 3.921 GJ·m-2·a-1,the energy consumption of air conditioner is 1.884 GJ·m-2·a-1,each of the energy consumption of air conditioner and illumination system accounts for 40% of the total energy consumption.According to the result tested,the problems of the air conditioner and illumination system are put forth.Furthermore,the paper probes into the technology and measures about the energy efficiency in air-conditioning system.