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

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.