Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A Comparative Study Between One- and Two-Stage Refrigeration System for the Natural Gas Cooling Process

천연가스 냉각을 위한 1단 냉동과 2단 냉동 사이의 비교연구

  • Cho, Jung-Ho (Department of Chemical Engineering, Kongju National University) ;
  • Kim, Dong-Min (Department of Materials Science and Engineering, Hongik University)
  • Received : 2010.06.11
  • Accepted : 2010.08.10
  • Published : 2010.08.31
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Abstract

In this study, a comparative study was performed between one- and two-stage refrigeration system to cool the natural gas temperature down to $-40^{\circ}C$ using propane as a chilling medium. As a thermodynamic model, Peng-Robinson equation of state equation was applied and PRO/II with PROVISION release 8.3 at Invensys company was utilized for the simulation of the refrigeration system. Through this study, optimization work showed that two-stage refrigeration system was proven to save about 33.5% refrigeration power consumption compared to the one-stage refrigeration cycle.

본 연구에서는 천연가스의 온도를 $-40^{\circ}C$까지 냉각시키기 위해서 프로판을 냉매로 사용한 1단 냉동과 2단 냉동 사이의 비교연구를 수행하였다. 열역학 모델식으로는 Peng-Robinson 상태방정식을 적용하였으며, 냉동 사이클의 전산모사를 위해서 Invensys사의 PRO/II with PROVISION 8.3을 활용하였다. 본 연구에서로부터 2단 압축 냉동 사이클을 최적화한 결과 1단 압축 냉동 사이클에 비해서 압축기의 소요동력을 33.5% 가량 줄일 수 있었다.

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References

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