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

  • 제23권7호
  • /
  • Pages.513-519
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  • 2011
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
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단일유로 멀티사이클 및 바이패스유로 멀티사이클 적용 냉동시스템의 성능특성에 관한 실험적 연구

An Experimental Study on the Performance Characteristics of a Single-Circuit Multi Cycle and a Bypass Two-Circuit Multi Cycle

  • 송영승 (고려대학교 기계공학과 대학원) ;
  • 정해원 (고려대학교 기계공학과 대학원) ;
  • 윤원재 (고려대학교 기계공학과 대학원) ;
  • 김용찬 (고려대학교 기계공학부)
  • Song, Young-Seung (Department of Mechanical Engineering, Graduate School of Korea University) ;
  • Jung, Hae-Won (Department of Mechanical Engineering, Graduate School of Korea University) ;
  • Yoon, Won-Jae (Department of Mechanical Engineering, Graduate School of Korea University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University)
  • 투고 : 2010.12.14
  • 심사 : 2011.06.15
  • 발행 : 2011.07.10
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초록

The object of this study is to investigate the performance characteristics of refrigerators using a single-circuit multi cycle and a bypass two-circuit multi cycle. Each refrigeration cycle was tested by varying secondary fluid mass flow rate and temperature. Based on the experimental data, the optimum refrigerant charge was 48 g and the COP at the optimum secondary fluid mass flow rate was 1.53 for the single-circuit multi cycle. For freezer(F)-only mode, both the single-circuit multi cycle and the bypass two-circuit multi cycle were operated at overcharge conditions, resulting in an increase of the secondary fluid mass flow rate. The maximum COPs of the single-circuit multi cycle and the bypass two-circuit multi cycle were 1.22 and 1.35, respectively. The COP increased by 10.7% with the application of the bypass two-circuit multi cycle.

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참고문헌

  1. Gigiel, A., 2004, Safety testing of domestic refrigerators using flammable refrigerants, International Journal of Refrigeration, Vol. 27, pp. 621-628. https://doi.org/10.1016/j.ijrefrig.2004.03.001
  2. Lee, M. and Ki, S., 2005, A study on performance characteristics of propane/isobutane refrigerant mixtures in a domestic small multi- refrigeration system, Trans. of the KSME (B), Vol. 29, No. 2, pp. 271-278.
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  4. Kim, C. N., Kim, Y. Y., Lee, J. S., Bae, H. K., Kim, M. W., and Park, Y. J., 2003, A study on the performance of refrigerator with time divided multi-evaporator and expansion cycle, Proceedings of the SAREK 2003 Summer Annual Conference, pp. 1261-1266.