Abstract
Water source heat pump system is a green air-conditioning system which has high efficiency, energy saving, and environmental protection, but inappropriate design of the system type of water intake will impact on energy efficiency ratio of the system. In order to evaluate the efficiency of heating and cooling source use of water source heat pump system, the impacts of temperature, flow and static head of cooling water on the energy efficiency ratio of water source heat pump system are analyzed in this paper. The cooling load of air condition and parameters of cold water are set as control objectives, and the analytical model of energy efficiency ratio including the energy consumption of cooling water system and cooling water unit is proposed. The running energy efficiency ratios of two types of water source heat pump system are analyzed by using this model (direct heat transfer that surface water flowing into condenser directly, indirect heat transfer through plate heat exchanger). The results show that the impact of change of cooling water temperature on energy efficiency ratio is bigger than the change of static head of cooling water system.
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