Abstract
This paper presents the measurement and analysis results of the cooling performance of a ground-source heat pump system using surface water heat exchanger (SWHE) submerged in an artificial pond. In order to measure the performance of the system, we installed monitoring equipment including sensors for measuring temperature and power consumption, and then measured operation parameters. The results from the thermal performance test for the SWHE showed that the temperatures at the outlet of the SWHE and at the inside of the pond were affected by outdoor air temperature. In addition, the results showed similar variation trends on temperatures; however, the peak temperatures of the SWHE were somewhat greater than those of outdoor air, due to the thermal capacity of the pond. Analyzing the cooling performance over the measurement period, the average coefficient of performance (COP) of heat pump in cooling mode was found to be 5.71, while that for the entire system was 2.99.
