The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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A Feasibility Study on the Mixed Refrigerant Composition in the Rankine Cycle Empowered by Cold Energy

냉열을 이용한 랭킨 사이클 방식의 발전시스템에서 혼합냉매유체 조성비의 적용한계 분석

  • Jeong, Moon (School of Applied Chemical Engineering, Chonnam National University) ;
  • Cho, Eunbi (School of Applied Chemical Engineering, Chonnam National University) ;
  • Hwang, Inju (Environmental & Plant Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kang, Choonhyoung (School of Applied Chemical Engineering, Chonnam National University)
  • 정문 (전남대학교 응용화학공학부) ;
  • 조은비 (전남대학교 응용화학공학부) ;
  • 황인주 (한국건설기술연구원 환경플랜트연구소) ;
  • 강춘형 (전남대학교 응용화학공학부)
  • Received : 2016.03.29
  • Accepted : 2016.05.16
  • Published : 2016.06.01
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Abstract

The power generation system using cold energy, which evolves in a large amount during the vaporization process of the liquefied natural gas, was designed in favor of the Rankine cycle with a mixed refrigerant as the working fluid. In this study it is intended to identify the allowable limits of the working fluid composition in respect of equipment safety in the Rankine cycle-type power generation system driven by the cold energy. The thermodynamic properties of the working fluid, which is a hydrocarbon mixture, were calculated with the Peng-Robinson model. In the steady state simulation of the power generation system by using a commercial tool Aspen HYSYS, the feed conditions of LNG Test Bed Train No.1 along with some necessary assumptions were incorporated. The results indicated that deterioration of the mechanical performance of the equipment as well as its safety would be brought about if contents of $C_2H_6$ and $C_3H_8$ in the mixture become, respectively, too high or too low.

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References

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