Energy and exergy analyses of an integrated renewable energy system for hydrogen production

Ali M.M.I. Qureshy and Ibrahim Dincer

Energy, 2020, vol. 204, issue C

Abstract: In this study, a new integrated energy system using a renewable energy source is developed to generate hydrogen in a clean manner, and a complete thermodynamic analysis and assessment through energy and exergy approaches for the solar-water-hydrogen-power cycle is carried out. In this regard, an evaluation of energetic and exergetic efficiencies of the proposed system and all subcomponents is performed to determine the exergy destructions and losses of the system and its major subcomponents. Moreover, a parametric study is performed for assessing various key components on the overall performance of the system. The present results show that the proposed system achieves a 25.07% of energy efficiency and a 31.01% of exergy efficiency, respectively. The exergy destruction and entropy generation rates at the solar receiver become the highest as 115.86 MW and 388.80 kW/K, respectively. The highest energy and exergy efficiencies are obtained at 1000 MW of the incoming heat rate of the solar receiver to be 33.53% and 41.49%, respectively. Furthermore, the highest heat transfer rate occurs in the solar receiver, whereas the highest work output results in the high-pressure turbine.

Keywords: Solar energy; Hydrogen production; Solar reactor; Thermolysis; Efficiency; Exergy (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (17)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:204:y:2020:i:c:s0360544220310525

DOI: 10.1016/j.energy.2020.117945

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