重庆地区某地表水地源热泵系统运行测试及分析

Operation measurement and analysis of a surface water source heat pump system in Chongqing

针对目前很多地表水地源热泵系统能效比低的问题,对重庆市某酒店的夏季运行工况进行了测试,得出机组能效比最小约为1.7,平均值为4.33;系统能效比最小约为1.0,平均值为2.5。通过分析该系统的运行状况,提出以下提高系统能效比的措施:冷热源设计时要进行全年动态负荷模拟,并且考虑复合式系统的应用;取水口和排水口的位置应合理布置;合理控制机组进出水温差和水质,并且对排水能量进行综合利用。

In view of the current problem of lower energy efficiency ratio,tests the operating conditions of the system in summer,the results show that the minimum energy efficiency ratio of the unit is about 1.7,average 4.33;the minimum energy efficiency ratio of the system is about 1.0,average 2.5.Analyses the operating conditions of the system and proposes the following improving measures as the annual dynamic load must be simulated for the cold and heat source design,and application of the composite system should be considered;proper locations of water intakes and outlets should be arranged;water temperature difference and the water quality must be controlled adequately,and comprehensive utilization of the injection water should be promoted.