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

Al-Shammari, Ghanim Kadhim Naser; Abbasalizadeh, Majid; Mirzaee, Iraj

doi:10.22104/hfe.2024.7170.1325

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

Articles in Press

Document Type : Research Paper

Authors

Ghanim Kadhim Naser Al-Shammari ¹

Majid Abbasalizadeh ¹

Iraj Mirzaee ²

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

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

10.22104/hfe.2024.7170.1325

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

Binary flash cycle

Geothermal energy

Thermodynamic analysis

Hydrogen production

Subjects