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 Simulation of a R744 Refrigeration System in a Refrigerator Truck under a Frost Condition

착상조건에서 R744 냉매 적용 탑차용 냉장시스템의 성능해석

  • Kim, Sang Hun (Graduate School of Mechanical Engineering, Chosun University) ;
  • Myoung, Chi Wook (Graduate School of Mechanical Engineering, Chosun University) ;
  • Cho, Hong Hyun (Department Mechanical Engineering, Chosun University)
  • 김상훈 (조선대학교 기계공학과 대학원) ;
  • 명치욱 (조선대학교 기계공학과 대학원) ;
  • 조홍현 (조선대학교 기계공학과)
  • Received : 2013.05.06
  • Published : 2013.09.10
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Abstract

R744 has been appropriated for substitute refrigerant, because of its high stability, and environment-friendly nature as a natural refrigerant. To analyze the cooling performance of a refrigeration system in a refrigerator truck using R744 according to the blocking ratio, an analytical model of the refrigeration system was developed under frost conditions, using EES. The performance of the refrigeration system was predicted with the indoor and outdoor air temperature, outdoor air velocity, and compressor speed. As a result, the system performance decreased, with the increase of frost growth. When the blocking ratio was 40.4% in the basic condition, the refrigeration capacity was decreased by 27.1%, compared to the non-frost condition.

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References

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