| Title |
An Experimental Study on the High Performance Optimal Discharge System of a Rotary Compressor for an Air Conditioner using Alternative Refrigerant R410a |
| Keywords |
Alternative refrigerant ; 대체냉매 ; Rotary compressor ; 회전식 압축기 ; Discharge system ; 토출계 ; P-V analysis ; P-V분석 ; Performance ; 성능 ; Loss ; 손실 |
| Abstract |
R410a which is one of HFC refrigerants is being considered to be a promising replacement for R22 widely used in domestic air conditioners. The rolling piston type rotary compressors for R410a have lower energy efficiency than those for R22 because of the high pressure difference between a suction chamber and a discharge chamber in the compression mechanism. In addition, the re-expansion gas loss of the rotary compressor for R410a which occurs at a clearance volume in a discharge port becomes larger than that for R22 due to high density of R410a refrigerant. Therefore, Pressure-Volume analyses for various design parameters of a discharge system were carried out to improve efficiency of a R410a rotary compressor. The results such as performance data, over-compression loss, and re-expansion loss were acquired by P-V analyses and analyzed quantitatively. As a conclusion, the optimal specifications of several design parameters of a discharge system were obtained by analyzing P-V diagrams. |