Solar-driven multi-generation system: Thermoeconomic and environmental optimization for power, cooling, and liquefied hydrogen production

Xia Qing

Energy, 2024, vol. 293, issue C

Abstract: This study explores the utilization of solar energy to power an integrated energy system that includes power, cooling, and liquefied hydrogen production. The proposed system undergoes a thorough evaluation from three essential perspectives: thermodynamics, economics, and environmental. Additionally, a sensitivity analysis is conducted to gain insights into the operational dynamics. Furthermore, an optimization process is implemented to attain the optimal sate. The findings reveal a net power production of 13.45 MW, a cooling production rate of 3.41 MW, and a liquefied hydrogen production rate of 27.3 kg/h. These production rates are associated with cost and exergoenvironmental impact rates of 1280.9 $/h and 122.04 Pt/h, respectively, resulting in a payback period of 6.04 years at the baseline. An increase in the electrolyzer input power from 5 % to 15 % of the total power production enhances the liquefied hydrogen production from 14.84 to 41.2 kg/h. However, this increment leads to a reduction in exergy efficiency from 9.27 % to 8.78 % due to a decrement in net power. The optimal state yields net power and liquefied hydrogen rates of 14.03 MW and 33.53 kg/h, respectively. This state results in an increased products cost rate of 1301.85 $/h but reduces the payback period to 5.77 years.

Keywords: Solar energy; Liquefied hydrogen; Multi-aspect analysis; Multi-objective optimization (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:293:y:2024:i:c:s0360544224001804

DOI: 10.1016/j.energy.2024.130409

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