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Design optimization of a 0.1-ton/day active magnetic regenerative hydrogen liquefier.

Author(s) : ZHANG L., SHERIF S. A., DEGREGORIA A. J., et al.

Type of article: Article

Summary

The liquefier is proposed for the industrial liquid hydrogen market with overall efficiency being the primary measure of performance. This performance is described in terms of particle size, bed length, and inter-stage temperature. Efficiency comparable to larger gas cycle plants is predicted. The magnetic liquefier may be modified to operate as a two-stage magnetic refrigerator between 77 and 20 K with high efficiency. The paper describes an optimization method as applied to the design of a two-stage active magnetic regenerative hydrogen liquefier and presents the associated results. A five-parameter optimization process is performed since there are five changeable parameters; the low- and high-stage particle sizes, the low- and high-stage bed lengths, and the inter-stage temperature. Model results are presented and compared with experimental resuls of an actual liquefier.

Details

  • Original title: Design optimization of a 0.1-ton/day active magnetic regenerative hydrogen liquefier.
  • Record ID : 2002-1171
  • Languages: English
  • Source: Cryogenics - vol. 40 - n. 4-5
  • Publication date: 2000/04

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