Life circle environmental assessment and operating control strategy of water chiller
1.School of Energy and Environment Institute, Southeast University, Nanjing, Jiangsu 210096, China; 2.Emerson Network Power Co., Ltd., Shenzhen, Guangdong 518000, China
Abstract：Life cycle assessment was used to investigate the effects of watercooled screw chiller on human health, ecosystem quality and resource consumption. The emissions of greenhouse gas and polluted gas were obtained. The concept of environmental benefit curve was proposed to compare environmental benefit of water chiller with that of home air conditioning based on an engineering project. The results show that environmental effect and gas output were the main indicators for evaluating the environmental benefit of watercooled screw chiller. The usage of electrical power has marked influence on environment. To reduce the harmful extent to environment, more attention should be paid on power saving and new energy using. The comparison of two projects shows that water chiller has more stable environmental benefit, which is more suitable for permanent investment. When operating hour is over 1 000 h per year, water chiller will represent good environmental benefit.
2013, Vol. 34 
