Journal
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
Volume 51, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seta.2021.101861
Keywords
ORC; Humidification-dehumidification; Solar and geothermal; Polygeneration; ICE; Hydrogen production
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In this study, an innovative solar-geothermal-natural gas-driven polygeneration system is proposed, which utilizes various technologies and analyses to produce power, hydrogen, hot water, and freshwater. Through evaluation and analysis, the energy efficiency, exergy efficiency, cost, and environmental impact of the system are determined, and the best organic fluid is identified.
In the present work, an innovative solar-geothermal-natural gas-driven polygenration system is presented. It consists of using organic Rankine cycle, Internal Combustion Engine, Polymer Electrolyte Membrane, and Humidification-Dehumidification desalination plant to produce power, hydrogen, hot water, and freshwater. Energy, Exergy, Exergoeconomic, and Exergoenvironmental (4E) analyses have been performed for the proposed system. 4E analyses can provide a comprehensive overview of the proposed system. In addition, sensitivity analysis for the system's main parameters has been done to evaluate the system. Also, nine organic fluids were used and compared based on 4E analyses. The results show that energy and exergy efficiencies and total annual cost and environmental impacts of the system are 23.87%, 28.21%, 0.144 $/kWh, and 0.024 Pts/kWh. Also, the average production of freshwater is 4.67 m(3)/day, and the production of hydrogen and hot water is estimated at 1.85 kg/h and 1.31 kg/s, respectively. R141b is the best fluid for the organic Rankine section.
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