Gradient Utilization of Low Temperature Geothermal Water in a HVAC System

摘要：

A HVAC system in which low temperature geothermal water is passed through the radiator system and the evaporators of water source heat pump system serially was proposed,and its application to the reconstruction of an existing HVAC system was researched.To minimize the total energy consumption of the heat pumps,the water pumps and the geothermal water,an energy consumption simulation model was developed,and the optimal outlet temperature of radiator system th,namely,inlet temperature of evaporators in water source heat pump system can be obtained.The energy of geothermal water was equivalent to electric consumption in this simulation model.The simulation for the gradient utilization of 45℃ low temperature geothermal water applied to the reconstruction of the existing HVAC system in Tianjin Zoo showed,that the optimal temperature th and optimal total electric consumption is 34℃ and 275000KWh respectively.The energy cost of running for the gradient utilization scheme is minimum,comparing with coal fired heating scheme and conventional heat pump scheme.

关键词： HVAC system Low temperature geothermal water Heat pump Energy Consumption Gradient utilization

作者: Huan Zhang Xianli Li Leilei Wang Shijun You

作者单位: School of Environmental Science and Technology,Tianjin University,Tianjin,China

会议类型: 国际会议

会议名称: The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)

会议地点: 大连

会议语种:英文

页码: 617-624

在线出版日期: 2008-07-01（万方平台首次上网日期，不代表论文的发表时间）