| Title |
An Experimental Study on the Performance Characteristics of a Single-Circuit Multi Cycle and a Bypass Two-Circuit Multi Cycle |
| Authors |
송영승(Youngseung Song) ; 정해원(Haewon Jung) ; 윤원재(Wonjae Yoon) ; 김용찬(Yongchan Kim) |
| Keywords |
단일유로 멀티사이클 ; 바이패스유로 멀티사이클 ; 성능계수 ; 냉장고 Single-circuit multi cycle ; Bypass two-circuit multi cycle ; COP ; Refrigerator |
| Abstract |
The object of this study is to investigate the performance characteristics of refrigerators using a single-circuit multi cycle and a bypass two-circuit multi cycle. Each refrigeration cycle was tested by varying secondary fluid mass flow rate and temperature. Based on the experimental data, the optimum refrigerant charge was 48 g and the COP at the optimum secondary fluid mass flow rate was 1.53 for the single-circuit multi cycle. For freezer(F)-only mode, both the single-circuit multi cycle and the bypass two-circuit multi cycle were operated at overcharge conditions, resulting in an increase of the secondary fluid mass flow rate. The maximum COPs of the single-circuit multi cycle and the bypass two-circuit multi cycle were 1.22 and 1.35, respectively. The COP increased by 10.7% with the application of the bypass two-circuit multi cycle. |