Experiments on energy saving characteristics of hybrid ground-source VRF system in summer

Describes the system test bed in detail, and compares the energy efficient characteristics of cooling tower VRF system and ground-source VRF system in summer, and finds the actual variation regularity of unit EER and system EER in conditions of partial load ratio. The system EER value varies from 1.19 to 3.63 in cooling tower conditions, while from 1.12 to 5.4 in ground-source conditions, providing necessary experiment references for research and operation strategy of hybrid ground-source VRF system.