Experimental Study on Thermophysical and Kinetic Properties of the LaNi5-H2 System

Atsumasa Yoshida, Yasuhiro Naka, Tsutomu Ohkita

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9 Citations (Scopus)

Abstract

Thermophysical and kinetic properties of the LaNi5-H2 system are investigated for the practical utilization of hydriding alloys. The measurements of the thermophysical properties are carried out by a transient hot-wire method along the P-C isotherms. The effective thermal conductivities of the system increase not only with the increase of the hydrogen gas pressure but also in the plateau region with the increase of the composition of the metal hydride. The specific heats of the metal hydride increase with the increase of the composition. The kinetic properties are measured under the isobaric and the isothermal conditions. The derived intrinsic chemical reaction rates indicate the difference in reaction mechanism between the absorption and the desorption processes.

Original languageEnglish
Pages (from-to)536-540
Number of pages5
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume56
Issue number522
DOIs
Publication statusPublished - 1990
Externally publishedYes

Keywords

  • Chemical Reaction
  • Effective Thermal Conductivity
  • Heat Conduction
  • LaNi-H System
  • Metal Hydride
  • Powders
  • Reaction Rate
  • Specific Heat
  • Thermophysical Property

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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