Thermodynamic assessment of geothermal energy use in hydrogen production

Tolga Balta M. T., Dincer I., Hepbasli A.

International Journal of Hydrogen Energy, vol.34, no.7, pp.2925-2939, 2009 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 7
  • Publication Date: 2009
  • Doi Number: 10.1016/j.ijhydene.2009.01.087
  • Journal Name: International Journal of Hydrogen Energy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2925-2939
  • Keywords: Efficiency, Energy, Exergy, Geothermal, High-temperature electrolysis, Hydrogen
  • Uşak University Affiliated: No

Abstract

In this study, geothermal-based hydrogen production methods, and their technologies and application possibilities are discussed in detail. A high-temperature electrolysis (HTE) process coupled with and powered by a geothermal source is considered for a case study, and its thermodynamic analysis through energy and exergy is conducted for performance evaluation purposes. In this regard, overall energy and exergy efficiencies of the geothermal-based hydrogen production process for this HTE are found to be 87% and 86%, respectively. © 2009 International Association for Hydrogen Energy.