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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.
최홍원(Hong Wone Choi),김민수(Min Soo Kim) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2021 No.6
In this study, we reformulated a theoretical model to predict a performance of organic Rankine cycle (ORC) system. To do that, a physical correlation for operating temperature was newly proposed based on several thermodynamic correlations. The predicted data from the model was compared with the results of numerical simulation. The results indicated that the predicted data are in good agreement with those of numerical simulation. The proposed model can be applied in measuring a potential of heat sources, or quickly finding the optimum operating conditions with the highest power output.