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Measurement of thermal conductivity of TBAB CHS by inclusion of the effect of phase change.

Number: pap. P01

Author(s) : ZHANG P., MA Z. W.

Summary

In the present study, the thermal conductivity of tetra-n-butylammonium bromide (TBAB) clathrate hydrate slurry (CHS) is experimentally measured by using transient hot-wire method. The effect of the phase change process on the thermal conductivity is theoretically analyzed and has been properly considered in the measurement. It is found that the thermal conductivity of type B TBAB CHS is determined to be around 0.5 W m-1 K-1. The analytical results indicate that phase change has quite large influence on the thermal conductivity measurement in that the real thermal conductivity is smaller than the apparent thermal conductivity obtained from the experimental measurement because phase change process enhances heat transfer. And the smaller the mass fraction of CHS, the larger the influence of phase change on thermal conductivity is.

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Pages: 8 p.

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Details

  • Original title: Measurement of thermal conductivity of TBAB CHS by inclusion of the effect of phase change.
  • Record ID : 30005096
  • Languages: English
  • Source: 10th International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: Kobe, Japan, July 29-August 1, 2012.
  • Publication date: 2012/07/01

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