The analysis of test results for the operation of some ground coupled heat pump systems in Wuhan

Abstract

Based on the test results of some ground source heat pump systems in Wuhan, China, the energy efficiency, operation parameters and indoor thermal environment are studied. Indirect method was used to measure energy efficiency of the heat pump unit and system. The operation characteristics of the systems, the comparison and the difference between the system performance and the standard are analyzed. It is showed that most systems meet the standard of energy efficiency and all systems have a certain energy saving effect. Some systems have shortage in system performance, which includes small value of system COP, the relatively small temperature difference of supply and return water, higher energy consumption of pump, etc.