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A High-Performance Dual-Stage Hydrogen Compressor System Using Ca0.2Mm0.8Ni5 Metal Hydride

[+] Author Affiliations
Md Mainul Hossain Bhuiya, Ryan Hopkins, Kwang J. Kim

University of Nevada, Reno, Reno, NV

Chi Young Lee

Korea Atomic Energy Research Institute, Daejeon, S. Korea

Hyungkee Yoon

Korea Institute of Energy Research, Daejeon, S. Korea

Sunwoo Kim

University of Alaska, Fairbanks, Fairbanks, AK

Sang Heup Park

Kongju National University, Cheonan, Chungnam, S. Korea

Paper No. SMASIS2011-5120, pp. 745-751; 7 pages
doi:10.1115/SMASIS2011-5120
From:
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
  • Scottsdale, Arizona, USA, September 18–21, 2011
  • ISBN: 978-0-7918-5471-6
  • Copyright © 2011 by ASME

abstract

Dual stage hydrogen compressor with high pressure compression ability can operate efficiently using geothermal, low temperature solar, waste energy as well as combination of these energy sources. In this study, a dual stage thermal compressor system for hydrogen compression was investigated using three different hydrogen storage materials: LaNi5 , Ca0.6 Mm0.4 Ni5 and Ca0.2 Mm0.8 Ni5 . Compression ratio of Ca0.2 Mm0.8 Ni5 was found to be 56% and 14.7% higher than those of LaNi5 and Ca0.6 Mm0.4 Ni5 respectively, for single stage thermal compressor system with inlet supply pressure of 600 psig. On the other hand, compression performance of Ca0.2 Mm0.8 Ni5 was similar to that of LaNi5 at low supply pressure (e.g. 200 psig) condition. In this paper, a dual stage hydrogen compressor system with LaNi5 in first stage and Ca0.2 Mm0.8 Ni5 in second stage is proposed for high pressure hydrogen compression based on the experimental results of single stage system. Results show that 53% higher compression ratio can be attained using dual stage hydrogen compressor when appropriate storage materials are selected for two stages.

Copyright © 2011 by ASME

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