Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Analytical Study of Cooling Performance Comparison in a Refrigerator Truck Using R404A and R744

R404A와 R744의 냉매를 이용한 냉동탑차 냉장성능 비교에 관한 해석적 연구

  • Myung, Chi-Wook (Department of Mechanical Engineering, Graduate School of Chosun University) ;
  • Kim, Sang-Hun (Department of Mechanical Engineering, Graduate School of Chosun University) ;
  • Cho, Hong-Hyun (Department of Mechanical Engineering, Chosun University)
  • 명치욱 (조선대학교 대학원 기계공학과) ;
  • 김상훈 (조선대학교 대학원 기계공학과) ;
  • 조홍현 (조선대학교 기계공학과)
  • Received : 2011.04.18
  • Accepted : 2011.06.14
  • Published : 2011.11.01
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Abstract

The analysis of performance characteristics in a refrigerator truck using R404A and R744 was carried out by using theoretical method, and each performance was compared with a variation of operating conditions. The components and cycle simulation model were developed by using EES program. To investigate the performance characteristics with operating conditions, the performance of both systems was simulated according to indoor temperature, outdoor temperature, outdoor air velocity and compressor speed. As a result, the R744 system had a better COP than R404A system for given operating condition. The cooling capacity was not increased over the outdoor air velocity of 3 m/s. Besides, the performance of R404A system was more sensitive to operating conditions compared to that of R744 system.

Keywords

References

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