| Title |
Performance of Carbon Dioxide System for Freezing and Refrigeration |
| DOI |
http://dx.doi.org/10.6110/KJACR.2015.27.2.081 |
| Keywords |
이산화탄소 캐스케이드 시스템 ; 이산화탄소 이단 압축시스템 ; 팩 컬큐레이션 ; 액분사 ; 중간 냉각기 CO2 cascade system ; CO2 two-stage system ; Pack Calculation Ⅱ ; Liquid injection ; Intercooler |
| Abstract |
Performance of freezing and refrigeration systems in supermarket, which utilized CO2 as a refrigerant, was investigated by using the Pack Calculation Ⅱ. The configuration of simulated systems was basic parallel refrigeration system, cascade system, and two-stage system. The CO2 cascade system showed higher COP than basic parallel R404A system by 13% for MT and 62% for LT, respectively. Among the CO2 cascade systems, R717(MT)-CO2(LT) showed the highest performance. Open-type intercooler method showed higher performance than liquid injection for the two-stage CO2 systems. |