Hydrogen production capacity of a system based on geothermal energy and thermoelectric generator

Articles in Press

Document Type : Research Paper

Authors

1 Mechanical Engineering Department, Engineering Faculty, Urmia University, Urmia, Iran

2 Mechanical Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran

Abstract

In this paper, a power, refrigeration, and hydrogen production cycle using geothermal energy in a binary flash cycle has been conducted from a thermodynamic perspective. The cycle involves a basic condensation refrigeration cycle combined with a binary flash cycle and PEM electrolyzer, with geothermal energy as the driving force. A thorough thermodynamic simulation was carried out using EES software, and a parametric study of the proposed cycle was performed to demonstrate its operability under various input parameters. The results show that TEG 2 and the compressor exhibit the highest exergy destruction rates based on the exergy destruction rate analysis. Moreover, increasing the temperature of the first flash tank results in higher power and hydrogen production rates. Furthermore, increasing the temperature of the second flash tank leads to decreased energy and exergy efficiencies, power, and hydrogen production rates. Also, an increase in the geothermal mass flow rate causes a decrease in the power and hydrogen production rates of the system. Finally, it is found that a higher temperature difference results in a decrease in the hydrogen production rate.

Keywords

Main Subjects

Hydrogen, Fuel Cell & Energy Storage

Articles in Press, Accepted Manuscript
Available Online from 10 December 2024

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