Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Performance Comparison of Hot-gas Bypass Types with the Variation of Refrigeration Load

부하변화에 따른 hot-gas 바이패스 방식별 성능 비교

  • Baek, Seung-Moon (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Yoon, Jung-In (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Son, Chang-Hyo (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Heo, Jung-Ho (Department of Refrigeration and air-conditioning Engineering, Pukyong University)
  • 백승문 (부경대학교 냉동공조공학과) ;
  • 윤정인 (부경대학교 냉동공조공학과) ;
  • 손창효 (부경대학교 냉동공조공학과) ;
  • 허정호 (부경대학교 냉동공조공학과 대학원)
  • Received : 2014.08.06
  • Accepted : 2014.09.02
  • Published : 2014.10.31
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Abstract

In this paper, three refrigeration systems bypassing hot-gas to compressor outlet, compressor and condenser outlet and evaporator inlet are theoretically compared to offer basic design data for performance depending on cooling load using a HYSYS program. The main results are summarized as follows : First, the COP of third system is the highest. Next, the COP of second system is higher than first one. And, the temperature of compressor inlet of third system is constant for all cooling load. Compared to first and second system, the compressor inlet temperature of the first system is higher than second one for all cooling loads. From the above results, third system, which is bypassing hot-gas to evaporator inlet, is more advantageous when considering the precise temperature control and excellent performance of oil and water cooler of industrial machine.

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References

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