Energy and exergy analyses of magnesium-chlorine (Mg-Cl) thermochemical cycle

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

International Journal of Hydrogen Energy, vol.37, no.6, pp.4855-4862, 2012 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 6
  • Publication Date: 2012
  • Doi Number: 10.1016/j.ijhydene.2011.12.044
  • Journal Name: International Journal of Hydrogen Energy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4855-4862
  • Keywords: Efficiency, Energy, Exergy, Hydrogen production, Magnesium-chlorine cycle
  • Uşak University Affiliated: No

Abstract

In this paper, we conduct energy and exergy analyses of the magnesium-chlorine (Mg-Cl) thermochemical cycle for hydrogen production and examine the respective cycle energy and exergy efficiencies. We also undertake a parametric study to investigate how the overall cycle performance is affected by changing the reference environment temperature and operating conditions. The results show that Mg-Cl cycle offers a good potential due to its high energy and exergy efficiencies as 63.63% and 34.86%, respectively, based upon the conditions and parameters considered. In this regard, Mg-Cl cycle appears to be a promising low temperature thermochemical cycle. It may, therefore, compete with other low temperature thermochemical and hybrid cycles such as the copper-chlorine cycle. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.