동력기계공학회지 (Journal of Power System Engineering)

  • 제14권2호
  • /
  • Pages.28-33
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  • 2010
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  • 2713-8429(pISSN)
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  • 2713-8437(eISSN)
한국동력기계공학회 (The Korean Society for Power System Engineering)
권호 표지

초저온 케스케이드 냉동사이클의 중간압력 및 바이패스 유량 최적화

Optimization of Middle Pressure and Bypass Mass Flow Rate in Cryogenic Refrigeration Cascade Cycle

  • 투고 : 2010.01.05
  • 심사 : 2010.03.30
  • 발행 : 2010.04.30
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초록

In this research, cascade liquefaction process was simulated using two-staged direct expansion with inter-cooler. Evaporated gaseous refrigerant which has low pressure and temperature from the inter-cooler is mixed with gaseous refrigerant from outlet of 1st compressor, and flows into 2nd compressor. Therefore this prevents superheating compression. Compressor work of process which includes inter-cooler to all cycles shows the lowest value of 338.68 MW and it is lower 16.34% than that of basic process. Refrigeration capacity shows decreasing tendency as applied inter-cooler and that of process which includes inter-cooler to all cycles shows the lowest value of 449 MW. COP was increased when the inter-cooler was applied, and process which includes inter-cooler to all cycles shows highest value of 1.33. It shows that COP was increased because decrement of compressor work by applying inter-cooler was higher than decrement of refrigeration capacity.

키워드

참고문헌

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