Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Performance of Carbon Dioxide System for Freezing and Refrigeration

이산화탄소를 이용한 냉동·냉장 시스템의 성능연구

  • Kim, Yoonsup (Department of Mechanical Engineering, Hanbat National University) ;
  • Yun, Rin (Department of Mechanical Engineering, Hanbat National University)
  • 김윤섭 (한밭대학교 기계공학과) ;
  • 윤린 (한밭대학교 기계공학과)
  • Received : 2014.09.24
  • Accepted : 2014.12.03
  • Published : 2015.02.10
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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.

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References

  1. Likitthammanit, M., 2007, Experimental investigation of NH3/$CO_2$ cascade and transcritical $CO_2$ refrigeration systems in supermarkets, MS thesis, Stockholm, Sweden.
  2. Silva, A. D., Filho, E. P. B., and Antunes, A. H. P., 2012, Comparison of a R744 cascade refrigeration system with R404A and R22 conventional systems for supermarkets, Applied Thermal Engineering, Vol. 41, pp. 30-35. https://doi.org/10.1016/j.applthermaleng.2011.12.019
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Cited by

  1. Experimental Study of An Indirect-Refrigeration System with Carbon Dioxide vol.28, pp.5, 2016, https://doi.org/10.6110/KJACR.2016.28.5.202
  2. Recent Progress in Air-Conditioning and Refrigeration Research : A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2015 vol.28, pp.6, 2016, https://doi.org/10.6110/KJACR.2016.28.6.256