Measurements of hydrogen thermal conductivity at high pressure and high temperature

S. Moroe, P. L. Woodfield, K. Kimura, M. Kohno, J. Fukai, M. Fujii, K. Shinzato, Y. Takata

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


The thermal conductivity for normal hydrogen gas was measured in the range of temperatures from 323 K to 773 K at pressures up to 99 MPa using the transient short hot-wire method. The single-wire platinum probes had wire lengths of 10 mm to 15 mm with a nominal diameter of 10 μm. The volume-averaged transient temperature rise of the wire was calculated using a two-dimensional numerical solution to the unsteady heat conduction equation. A non-linear least-squares fitting procedure was employed to obtain the values of the thermal conductivity required for agreement between themeasured temperature rise and the calculation. The experimental uncertainty in the thermal-conductivity measurements was estimated to be 2.2 % (k = 2). An existing thermal-conductivity equation of state was modified to include the expanded range of conditions covered in the present study. The new correlation is applicable from 78 K to 773 K with pressures to 100 MPa and is in agreement with the majority of the present thermal-conductivity measurements within ±2 %.

Original languageEnglish
Pages (from-to)1887-1917
Number of pages31
JournalInternational Journal of Thermophysics
Issue number9
Publication statusPublished - Sept 2011

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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