Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
권호 표지
DOI QR코드

DOI QR Code

Performance Analysis of Cascade Refrigeration System with Respect to Refrigerants Appling to High Temperature Cycle

고온측 냉매에 따른 이원 냉동시스템의 성능 분석

  • Yoon, Jung-In (Department of Refrigeration and Air Conditioning Engineering, Pukyong National University) ;
  • Jeon, Min-Ju (Department of Refrigeration and Air Conditioning Engineering, Pukyong National University) ;
  • Son, Chang-Hyo (Department of Refrigeration and Air Conditioning Engineering, Pukyong National University)
  • 윤정인 (부경대학교 냉동공조공학과) ;
  • 전민주 (부경대학교 냉동공조공학과) ;
  • 손창효 (부경대학교 냉동공조공학과)
  • Received : 2016.12.20
  • Accepted : 2017.06.13
  • Published : 2017.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the Coefficient of performance(COP) and mass flow ratio of cascade refrigeration system with respect to refrigerants appling to high temperature cycle. The operating parameters considered in this study include degree of superheating and subcooling, compressor efficiency, evaporating temperature, condensing temperature and internal heat exchanger effectiveness in high temperature cycle. The result of this study is as follows : The COP of cascade system increases with increasing degree of superheating and subcooling, compressor efficiency and internal heat exchanger effectiveness except increasing condensing temperature. The mass flow ratio of low and high temperature cycle increases with increasing evaporating temperature and condensing temperature, but decreases with increasing internal heat exchanger effectiveness, degree of superheating and subcooling. Also, the mass flow ratio has no correlation with compressor efficiency at high temperature cycle.

Keywords

References

  1. C. H. Son, 2010, "Performance Analysis of Ammonia(R717) and Carbon Dioxide(R744) Two- Stage Cascade Refrigeration System", Journal of the Korean Institute of Gas, Vol. 14, No. 1, pp. 1-7.
  2. D. H. Lee, M. J. Jeon, C. H. Son and H. K. Oh, 2009, "Maximum Performance Prediction of an Ammonia(R717) and Carbon Dioxide(R744) Cascade Refrigeration System", Journal of Mechanical Science and Technology, Vol. 5, No. 3, pp. 531-537.
  3. A. Messineo, 2011, "R744-R717 Cascade Refrigeration System: Performance Evaluation compared with a HFC Two-Stage System", Energy Procedia, Vol. 1, No. 1, pp. 144-153.
  4. P. K. Bansal and S. Jain, 2007, "Cascade Systems: Past, Present, and Future", ASHRAE Trans, Vol. 113, No. 1, pp. 245-252.
  5. H. K. Oh and C. H Son, 2011, "Exergy Analysis of R744-R404A Cascade Refrigeration System", Journal of the Korean Society of Marine Engineering, Vol. 35, No. 8, pp. 1001-1008. https://doi.org/10.5916/jkosme.2011.35.8.1001
  6. H. K. Oh and C. H Son, 2012, "Performance analysis of a R744 and R404A cascade refrigeration system with internal heat exchanger", Journal of the Korean Society for Power System Engineering, Vol. 16, No. 1, pp. 38-43.
  7. EES: Engineering Equation Solver, fChart Software Inc., 2010.