江水源热泵水质标准实验及传热特性分析

分析了长江重庆段的水温和水质情况,通过实验方法测试了水源热泵机组在不同含沙量、浊度及藻类物质条件下的性能变化情况,提出了适应长江上游地区地表水源条件下的高效节能水源热泵机组的水质标准.实验结果表明:在不同水质条件下,热泵机组的性能系数最大下降了3.73%,换热器水侧污垢热阻的增幅最大为25.6%,当水质条件为含沙量≤100g/m3,浊度为≤50NTU时,热泵性能较好,可作为江水源热泵合适的冷却水水质标准.

Water Quality Standard Test and Heat Transfer Analysis of River Water Source Heat Pump

The water temperature and quality of Yangtze River in Chongqing section were analyzed,and the performance of water source heat pump units in different sediment concentrations,turbidity and algae material conditions were tested experimentally.Water quality standards in particular surface water conditions in the Yangtze River region that adapt to energy-efficient heat pump were proposed.The experiment results have showed that the coefficient of performance heat pump fell by 3.73% to the greatest extent,the fouling resistance of cooling water in heat exchanger increased by up to 25.6% in different water conditions.When the sediment concentration was less than or equal to 100 g/m3 and the turbidity of the river water was less than or equal to 50 NTU,the performance of heat pump was better,which could be used as the suitable river water quality standards for river water source heat pump.