LNG Cold Energy Optimization of Working Fluid Power Systems

In this paper, LNG-sea power system refrigerant flow is screened and constructed with the group contribution method. The actual boundary of the selected refrigerant fluid is setted, also the preliminary design scheme is given out, and verifies it in this paper. The results show that the group contribution method improve the matching degree between refrigerant condensing temperature curve and LNG vaporization temperature curve, and achieve a goal of efficient use of LNG cold energy. At last, the feasibility and effectiveness of the group contribution method for the research process of LNG cold energy generation systems are proved.