Thermo-Economic Analysis on Integrated CO2, Organic Rankine Cycles, and NaClO Plant Using Liquefied Natural Gas

The thermal energy conversion of natural gas (NG) using appropriate configuration cycles represents one the best nonrenewable resources because its high heating value and low environmental effects. can be converted to liquefied (LNG), via liquefaction process, which is used as a heat source sink in various multigeneration cycles. In this paper, new cycle proposed LNG sink. This includes CO2 cycle, organic Rankine (ORC), heater, cooler, an NaClO plant, reverse osmosis. generates electrical power, cooling energy, potable water (PW), hydrogen, salt all at same time. For purpose, computer program provided engineering equation solver for exergy, thermo-economic analyses. results each subsystem are validated by previous researches field. system produces 10.53 GWh 276.4 1783 17,280 m3 water, 739.56 tons 383.78 year. efficiency 54.3%, while exergy equal 13.1%. economic evaluation showed that payback period, simple net present value, internal rate return 7.9 years, 6.9 908.9 million USD, 0.138, respectively.