Effect of variable thermal conductivity and specific heat capacity on the calculation of the critical metal hydride thickness for Ti1.1CrMn

Andrea Mazzucco, Masoud Rokni

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Abstract

High pressure metal hydrides have been recently considered as one of the most promising hydrogen solid storage options for on - board applications. Unfortunately the high purchasing costs related to these materials and the complexity related to building a scaled high pressure tank system with activated powder and embedded heat exchanger makes difficult to set up experimental facilities. Trustable simulation models that can address the system ́s performances to a particular design are then a funda mental step to be taken prior any experimental setup. This study considers a detailed 1D fueling model is applied to the metal hydride system, with Ti 1.1 CrMn as the absorbing alloy, to predict the weight fraction of absorbed hydrogen and solid bed temperat ure . Dependencies of thermal conductivity and specific heat capacity upon pressure and hydrogen content respectively , are accounted for, by interpolating experimental data. The effect of variable parameters on the critical metal hydride thickness is invest igated and compared to results obtained from a constant parameter analysis . At the end , the discrepancy in the metal hydride thickness value is estimated around 10%
Original languageEnglish
Title of host publicationProceedings of the 20th World Hydrogen Energy Conference (WHEC 2014)
Publication date2014
Pages1025-1033
Publication statusPublished - 2014
Event20th World Hydrogen Energy Conference 2014 - Gwangju Metropolitan City, Korea, Republic of
Duration: 15 Jun 201420 Jun 2014
http://whec2014.com/eng/index.php?lang=eng

Conference

Conference20th World Hydrogen Energy Conference 2014
CountryKorea, Republic of
CityGwangju Metropolitan City
Period15/06/201420/06/2014
Internet address

Keywords

  • Hydrogen solid storage
  • Metal hydrides
  • 1D numerical model
  • High-pressure storage tank
  • Heat exchanger

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