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Abstract The liquefaction process is regarded as primary among all topside systems in liquefied natural gas floating production storage and offloading (LNG FPSO) applications. The liquefaction process, which typically accounts for 70% of the capital cost of topside process systems and 30 to 40% of the overall cost of LNG FPSO plants, condenses the separated and pre-treated natural gas into LNG. The volume of liquid occupies about 1/600th the volume of the natural gas. The cycles in the liquefaction process consist of seven main pieces of equipment: compressor, sea water cooler, expansion valve, heat exchanger, phase separator, tee, and common header. Many different types of liquefaction cycles are determined according to their respective synthesis and optimized operating conditions. This study first proposes the generic liquefaction model to represent various types of liquefaction cycles. Twenty-seven feasible liquefaction configurations derived from the generic model are selected to perform the most effective synthesis for the optimization of the liquefaction cycle. With the minimum amount of power required for the compressors, the optimized liquefaction cycle then is proposed by obtaining optimal operating conditions in 27 cases. The optimized liquefaction cycle is compared with the dual mixed refrigerant (DMR) cycle, which is considered for the application of LNG FPSO. Finally, the results show that the amount of power required for the operating conditions is decreased by 1.2% compared with that of the DMR cycle.
Publication Date 2012-06-17

Ji-Hyun Hwang, Nam-Kug Ku, Joon-Chae Lee, Myung-Il Roh, Kyu-Yeul Lee, "Optimal Synthesis of LNG FPSO Liquefaction Cycles", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2012, Rhodes, Greece, pp. 927-935, 2012.06.17-22


List of Articles
번호 분류 제목 Publication Date
416 Domestic Conference 구남국, 조아라, Martin Friebe, 이규열, 노명일, "역학 기반 이산 사건 시뮬레이션을 위한 다물체계 동역학 커널 개발", 2011년도 대한조선학회 추계학술발표회, 목포, pp. 126-132, 2011.11.03-04 file 2011-11-03
415 Domestic Conference 이준채, 구남국, 황지현, 노명일, 이규열, "LNG FPSO 액화 사이클의 최적 합성", 2011년도 대한조선학회 추계학술발표회, 목포, pp. 243-249, 2011.11.03-04 file 2011-11-03
414 Domestic Conference 차주환, 조두연, 송하철, 노명일, "조선소에서 트랜스포터의 최적 블록 운송 시뮬레이션 시스템 개발 및 적용", 2012년도 한국CAD/CAM학회 학술발표회, 평창, pp. 73-74, 2012.02.01-03 file 2012-02-01
413 Domestic Conference 구남국, 하솔, 조아라, 노명일, 이규열, "해상 시추선의 Hoisting System 동적 거동 해석을 위한 다물체계 동역학 Kernel 개발", 2012년도 한국CAD/CAM학회 학술발표회, 평창, pp. 81-87, 2012.02.01-03 file 2012-02-01
412 Domestic Conference 이준채, 구남국, 황지현, 노명일, 이규열, "LNG FPSO 액화 공정 사이클의 최적 설계", 2012년도 한국CAD/CAM학회 학술발표회, 평창, pp. 214-222, 2012.02.01-03 file 2012-02-01
411 International Conference Nam-kug Ku, Sol Ha, Myung-Il Roh, Kyu-Yeul Lee, "Dynamic Response Analysis of Multibody System in Discrete Event Simulation", Proceedings of ICORES(International Conference on Operations Research and Enterprise Systems) 2012, Algarve, Portugal, pp. 447-453, 2012.02.04-06 file 2012-02-04
410 Domestic Conference 구남국, 조아라, 이규열, 박광필, 노명일, "해상 시추선의 Heave Compensation System 동적 거동 해석", 2012년도 대한조선학회 춘계학술발표회, 대구, pp. 108-112, 2012.05.31-06.01 file 2012-05-31
409 Domestic Conference 구남국, 하솔, 이규열, 노명일, "다물체계 동역학 기반의 해상 크레인을 이용한 선박 진수 사례 시뮬레이션", 2012년도 대한조선학회 춘계학술발표회, 대구, pp. 435-441, 2012.05.31-06.01 file 2012-05-31
» International Conference Ji-Hyun Hwang, Nam-Kug Ku, Joon-Chae Lee, Myung-Il Roh, Kyu-Yeul Lee, "Optimal Synthesis of LNG FPSO Liquefaction Cycles", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2012, Rhodes, Greece, pp. 927-935, 2012.06.17-22 file 2012-06-17
407 Domestic Conference 구남국, 황지현, 노명일, 하솔, 이규열, "Generic Liquefaction Cycle을 위한 장비의 최적 배치", 2012년도 하계 선박설계연구발표회, 울산, pp. 1-47, 2012.08.23-24 file 2012-08-23
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