| Title |
A Study on Cooling Characteristics of Ground Source Heat Pump with Variation of Water Switching and Refrigerant Switching Methods |
| Authors |
차동안(Dong An Cha) ; 권오경(Oh Kyung Kwon) ; 박차식(Cha Sik Park) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2012.24.8.605 |
| Keywords |
냉방특성 ; 성능계수 ; 지열히트펌프 ; 냉매절환 ; 수절환 Cooling characteristics ; COP ; Ground source heat pump ; Refrigerant switching ; Water switching |
| Abstract |
The objective of this study is to investigate the influence of the cooling performance for a water-to-water 10 RT ground source heat pump by using the water switching and refrigerant switching method. The test of water-to-water ground source heat pump was measured by varying the compressor speed, load side inlet temperature, and ground heat source side temperature. The cooling capacity and refrigerant mass flow rate of the heat pump increased with increasing ground heat source temperature. But COP of the heat pump decreased with increasing ground heat source temperature. As a result, the water switching method with counter flow, compared to a refrigerant switching method, improves the cooling capacity and COP by approximately 6～9% in average, respectively. |