대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제47권5호
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  • Pages.733-742
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  • 2010
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  • 1225-1143(pISSN)
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  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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LNG-FPSO에의 적용을 위한 Hamworthy Mark I Cycle의 최적 운전 조건 결정

Determination of the Optimal Operating Condition of the Hamworthy Mark I Cycle for LNG-FPSO

  • 차주환 (서울대학교 공학연구소) ;
  • 이준채 (서울대학교 조선해양공학과 대학원) ;
  • 노명일 (울산대학교 조선해양공학부) ;
  • 이규열 (서울대학교 조선해양공학과 및 해양시스템공학연구소)
  • Cha, Ju-Hwan (Engineering Research Center, Seoul National University) ;
  • Lee, Joon-Chae (Department of the Naval Architecture & Ocean Engineering, Seoul National University) ;
  • Roh, Myung-Il (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Lee, Kyu-Yeul (Department of the Naval Architecture & Ocean Engineering, Seoul National University and Research Institute of Marine Systems Engineering, Seoul National University)
  • 투고 : 2010.02.09
  • 심사 : 2010.07.29
  • 발행 : 2010.10.20
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초록

In this study, optimization was performed to improve the conventional liquefaction process of offshore plants, such as a LNG-FPSO(Liquefied Natural Gas-Floating, Production, Storage, and Offloading unit) by maximizing the energy efficiency of the process. The major equipments of the liquefaction process are compressors, expanders, and heat exchangers. These are connected by stream which has some thermodynamic properties, such as the temperature, pressure, enthalpy or specific volume, and entropy. For this, a process design problem for the liquefaction process of offshore plants was mathematically formulated as an optimization problem. The minimization of the total energy requirement of the liquefaction process was used as an objective function. Governing equations and other equations derived from thermodynamic laws acted as constraints. To solve this problem, the sequential quadratic programming(SQP) method was used. To evaluate the proposed method in this study, it was applied to the natural gas liquefaction process of the LNG-FPSO. The result showed that the proposed method could present the improved liquefaction process minimizing the total energy requirement as compared to conventional process.

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참고문헌

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피인용 문헌

  1. Determination of the Optimal Operating Condition of Dual Mixed Refrigerant Cycle of LNG FPSO Topside Liquefaction Process vol.49, pp.1, 2012, https://doi.org/10.3744/SNAK.2012.49.1.33
  2. Multi-floor Layout for the Liquefaction Process Systems of LNG FPSO Using the Optimization Technique vol.49, pp.1, 2012, https://doi.org/10.3744/SNAK.2012.49.1.68
  3. Reliability Analysis of LNG FPSO Liquefaction Cycle in DEVS Environment vol.18, pp.2, 2013, https://doi.org/10.7315/CADCAM.2013.138
  4. Determination of Mixing Ratio of Mixed Refrigerants and Performance Analysis of Natural Gas Liquefaction Processes vol.51, pp.6, 2013, https://doi.org/10.9713/kcer.2013.51.6.677
  5. Optimal Design of Liquefaction Cycles of Liquefied Natural Gas Floating, Production, Storage, and Offloading Unit Considering Optimal Synthesis vol.52, pp.15, 2013, https://doi.org/10.1021/ie301913b