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Thermodynamic analyses of valve-controlled metal hydride refrigeration systems.

[In Chinese. / En chinois.]

Author(s) : ZHANG J. P., FU Q. S., GUO X. K., et al.

Type of article: Article

Summary

A dynamic model of performance analysis for valve-controlled metal hydride heat pumps was established. Computing simulation was used to explore the operation of valve-controlled metal hydride heat pumps. The effects of intermediate temperature, specific heat at constant pressure, mass ratio of hydride to the beds, and heat transfer coefficient on the dynamic performance were obtained. The results show that higher intermediate temperature will reduce both COP and cooling capacity, and specific heat at constant pressure of hydride beds cannot affect COP and cooling capacity greatly. Moreover, improving mass ratio of hydride to the beds can improve COP but reduce the cooling capacity. Further, improving heat transfer coefficient can improve COP and cooling capacity significantly. On the basis of the computing results, some measures are proposed to improve the dynamic performance of the system.

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Pages: 1-4, 29

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Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 2006-3187
  • Languages: Chinese
  • Source: Journal of Refrigeration - vol. 27 - n. 109
  • Publication date: 2006/06

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