| Title |
Potential Benefits of Saturation Compression Cycle with Liquid Injection in Showcase Vapor Compression Cycle |
| Authors |
Jeong Choe ; Jongmin Jung ; Yongseok Jeon |
| DOI |
https://doi.org/10.6110/KJACR.2021.33.4.190 |
| Keywords |
액인젝션; 쇼케이스; 포화압축사이클 Liquid injection; Showcase; Satuation compression cycle |
| Abstract |
The objective of this study is to decrease the refrigerant temperature at the compressor outlet under high thermal load conditions with low-GWP refrigerants in the showcase vapor compression cycle. When the outside temperature increases, the showcase cycle suffers a reliability problem due to the high discharge temperature. Liquid injection is a good method for decreasing the discharge temperature of the refrigeration cycle. This study presents the development of a simplified simulation model for predicting the performance of a liquid injection showcase cycle. The optimum injection pressures of the showcase cycle with R410A and R32 were presented. In addition, after the quasi-saturation compression cycle was reached through the multi-stage liquid injection control, the effect of reducing the discharge temperature was analyzed. Finally, the optimal number of injections for each of the refrigerant and operating conditions was presented. |