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http://dx.doi.org/10.6110/KJACR.2015.27.2.081

Performance of Carbon Dioxide System for Freezing and Refrigeration  

Kim, Yoonsup (Department of Mechanical Engineering, Hanbat National University)
Yun, Rin (Department of Mechanical Engineering, Hanbat National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.27, no.2, 2015 , pp. 81-86 More about this Journal
Abstract
Performance of freezing and refrigeration systems in supermarket, which utilized $CO_2$ 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 $CO_2$ cascade system showed higher COP than basic parallel R404A system by 13% for MT and 62% for LT, respectively. Among the $CO_2$ cascade systems, R717(MT)-$CO_2$(LT) showed the highest performance. Open-type intercooler method showed higher performance than liquid injection for the two-stage $CO_2$ systems.
Keywords
$CO_2$ cascade system; $CO_2$ two-stage system; Pack Calculation II; Liquid injection; Intercooler;
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  • Reference
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