Abstract
Demand for LNG, mainly in Asia, continues to increase in order to achieve the reduction of greenhouse gas emission and decarbonization goals. For the convenience of transport, natural gas is stored in a liquefied state and needs to be vaporized for reuse. A huge amount of cold heat is generated through the process of LNG re-gasification. In this study, the performance analysis of the closed cycle ocean thermal energy conversion (CC-OTEC) system using the vaporization cold heat of a small LNG regasification system as heat sink and warm surface seawater as a heat source was performed. After configuring the CC-OTEC with the working fluid as R32 in the LNG regasification system at 10 kg per second, the turbine inlet pressure changed from 15 bar to 17 bar. Gross power, net power, efficiency and parasitic load were analyzed. At the turbine inlet presusure of 16.2 bar, we exhibited the maximum net power of 198.5 kW and the maximum efficiency 2.78%.
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