Energy, exergy, and economic analyses of a new integrated system for generation of power and liquid fuels using liquefied natural gas regasification and solar collectors
التفاصيل البيبلوغرافية
العنوان:
Energy, exergy, and economic analyses of a new integrated system for generation of power and liquid fuels using liquefied natural gas regasification and solar collectors
Simultaneous design of units and process integration reduce the number of unnecessary equipment and energy consumption. In this paper, an integrated structure is developed and analyzed for liquid fuels and power cogeneration, using the air separation unit, Fischer–Tropsch synthesis unit, steam power plant, and organic Rankine power generation unit. Liquefied natural gas regasification and solar dish collectors are employed to supply the cooling and heating for the integrated structure, respectively. The integrated process is simulated and designed using MATLAB, HYSYS, and TRNSYS software packages, where a systematic sensitivity analysis is performed to investigate the effects of operating conditions on the process behaviors/performance. This integrated plant generates 200.6 MW power and 78.88 kgmol/h liquid fuels. The overall thermal energy and total exergy efficiencies of the integrated approach are 42.36% and 64.72%, respectively. According to the exergy analysis, the collectors are responsible for 32.98% of the total exergy destruction, followed by the heat exchangers causing 28.39% exergy destruction. Conducting economic analysis with the annualized cost of system (ACS) method, the period of return and the prime cost of the product are 2.186 years and 443.9 USD per m3 of liquid fuels, respectively. This research study offers useful guidelines/tips for the theoretical and practical implications of an effective integrated structure for production of liquid fuels and power at various thermodynamic and process conditions.
