Optimization and energy efficiency analysis of surface water source heat pump system condensing heat application

Establishes the condensing heat application thermodynamic model, and determines the condensation temperature and hot water temperature as the key factors affecting the condensing heat application based on the results of a thermodynamic analysis. Analyses the chiller energy efficiency when the factors change. The results show that the temperature of hot water can be close to 50 ℃ when the condensing temperature reaches above 40 ℃, while the cooling energy efficiency of the chiller will be lower than 4.0. Puts forward the optimization method of hot water temperature considering the energy efficiency of the chiller, and obtains the optimum hot water temperature range is 50-54 ℃, for which the cooling energy efficiency ratio of the chiller is greater than 4.5 and the comprehensive energy efficiency  ratio is greater than 5.6.