LNG Cold Energy Utilization Technology

A large amount of cold energy is discarded without being utilized during natural gas transmission process. In this chapter, available cold energy in LNG and LNG cold energy application areas are analyzed. LNG cold energy can be used for power generation, air separation, liquefaction of CO2, production of dry ice, cold storage and rapid cooling, district cooling and other applications. The schematics and characteristics for those application systems are described in detail. As for the case study, an organic Rankine cycle based power system which is attached with natural gas fueled LNG carrier is designed and an analysis of proper working fluid selection is conducted.

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