Numerical Investigation on the Operation and Energy Demand of a Seven-Stage Metal Hydride Hydrogen Compression System for Hydrogen Refuelling Stations

Evangelos Gkanas, Christodoulos Christodoulou, George Tzamalis, Emmanuel Stamatakis, Alexander Chroneos, Konstantinos Deligiannis, George Karagiorgis, A. K. Stubos

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
25 Downloads (Pure)


In the present work, a numerical analysis on the performance of a seven-stage metal hydride hydrogen compression (MHHC) system is introduced, presented and discussed. The operation efficiency and cost along with the reliability of hydrogen compression is of great importance for the future commercial availability of Hydrogen Refuelling Stations (HRS); thus, significant improvements in hydrogen compression must be achieved and novel methods and approaches are being investigated in that respect. MHHC’s offer distinct advantages over conventional mechanical compressors and the present paper aims at contributing to the efficient design and upscaling of such devices via advanced numerical simulations of a seven-stage MHHC. The numerical model was supported by and validated with solid experimental data. Furthermore, several different operational temperature ranges for the compressor were examined and the importance of the proper operation conditions is discussed in terms of temperature evolution, pressure profile, cycle duration, compression ratio, thermal energy demand and efficiency.
Original languageEnglish
Pages (from-to)164-178
Number of pages15
JournalRenewable Energy
Early online date22 Aug 2019
Publication statusPublished - 1 Mar 2020

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Renewable Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Renewable Energy, 147, (2020) DOI: 10.1016/j.renene.2019.08.104

© 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International


  • Hydrogen storage
  • Metal hydride hydrogen compressor
  • Metal hydrides
  • Multi-stage compression
  • Numerical analysis

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

Fingerprint Dive into the research topics of 'Numerical Investigation on the Operation and Energy Demand of a Seven-Stage Metal Hydride Hydrogen Compression System for Hydrogen Refuelling Stations'. Together they form a unique fingerprint.

Cite this