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Selection of alloys and their influence on the operational characteristics of a two-stage metal hydride heat transformer.

Author(s) : SUN D. W., GROLL M., WERNER R.

Type of article: Article

Summary

A heat transformer can upgrade heat to a higher temperature. A two-stage heat transformer has a greater temperature upgrading potential than a single-stage heat transformer, e.g. heat can be upgraded from a level of about 130-140 deg C to temperatures of about 200 deg C. A practical method to select suitable hydrides to be used in a two-stage heat transformer is presented. The examples discussed shows that the selected alloys result in a reasonable operation of the two-stage heat transformer. Three different evaluation criteria viz. coefficient of performance, alloy output and temperature output, are introduced to compare the operational characteristics of heat transformers with different alloys; the influence of some metal hydride properties on the operational characteristics is also discussed.

Details

  • Original title: Selection of alloys and their influence on the operational characteristics of a two-stage metal hydride heat transformer.
  • Record ID : 1993-0431
  • Languages: English
  • Source: Heat Recov. Syst. CHP - vol. 12 - n. 1
  • Publication date: 1992/01

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