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LNG 재기화 공정 중 발생하는 미활용 LNG 냉열 회수를 위한 유기랭킨사이클 시스템 설계에 관한 연구
최홍원(Hong Wone Choi),나선익(Sun Ik Na),홍성빈(Sung Bin Hong),류민철(Min Cheol Ryu),안수경(Su Kyung An),조두현(Du Hyeon Cho),김민수(Min Soo Kim) 대한설비공학회 2020 대한설비공학회 학술발표대회논문집 Vol.2020 No.6
In this study, we carried out system design about organic Rankine cycle combined with LNG regasficiation plant for recovering LNG cold energy into electricity. The influence of two design variables on net power are mainly investigated for properly determining distribution of heating duty for LNG regasification and size allocation of heat exchanger in the system. The results show possibility to maximize net power by optimizing size allocation of heat exchanger and heating duty for LNG regasification, when the total heat exchanger size given to the system is determinate. In addition, absorbing more LNG cold energy does not guarantee to convert more cold energy into electricity.
정성준(SUNG-JUN JUNG),박종천(JONG-CHUN PARK),이병혁(BYUNG-HYUK LEE),류민철(MIN-CHEOL RYU),김용수(YONG-SOO KIM) 한국해양공학회 2008 韓國海洋工學會誌 Vol.22 No.2
A moon-pool is a vertical well in a floating barge, drilling ship, or offshore support vessel. In this study, numerical simulation of two-dimensional moon-pool flow coupled with a ship's motion in waves is carried out using a particle method, the so-called MPS method. The particle method, which is recognized as one of the gridless methods, was developed to investigate nonlinear free-surface motions interacting with structures. The method is more feasible and effective than convectional grid methods in order to solve a flow field with complicated boundary shapes.
입자법을 이용한 비선형식 자유표면 유동의 수치 시뮬레이션
이병혁(BYUNG-HYUK LEE),박종천(JONG-CHUN PARK),정성준(사회자),류민철(MIN-CHEOL RYU),김용수(YONG-SOO KIM),김영훈(YOUNG-HUN KIM) 한국해양공학회 2007 韓國海洋工學會誌 Vol.21 No.6
A particle method, recognized as one of gridless methods, has been developed to investigate non-linear free-surface motions interacting with structures. This method is more feasible and effective than conventional grid methods for solving flow fieldswith complicated boundary shapes. The method consists of particle interaction models representing pressure gradient, diffusion, incompressibility, and the free-surface boundary conditions without grids. In the present study, broken dam problems with various viscosity values are simulated to validate the developed method.