کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
789315 | 1466412 | 2015 | 13 صفحه PDF | دانلود رایگان |
• We analyze the leakage characteristics of a R290 rolling piston compressor.
• Leakage characteristics of R290 with other refrigerants are compared.
• All kinds of leakage in the rolling piston compressor are simulated.
• Leakage caused by wall velocity has been taken into account.
• Recommendations in R290 compressor design are provided.
This paper presents a comparative analysis on leakage losses of a rolling piston type rotary compressor with refrigerants of R290, R22 and R410a. In particular, the difference of leakage losses characteristics between R290 compressor and that of other refrigerant compressors has been studied. Leakage losses through radial clearance, clearances between rolling piston faces and the cylinder head walls, clearances between the sliding vane faces and the cylinder head walls, as well as the clearances between the sides of the sliding vane and the side walls of the chutes inside the cylinder have been studied in the present methodology. Radial leakage caused by the wall velocity has been taken into account in the present study. Simulation results indicate that smaller radial clearance is required for R290 compressor to obtain relatively high efficiency comparing to that of R22 and R410a compressors under the same condition.
Journal: International Journal of Refrigeration - Volume 53, May 2015, Pages 42–54