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Thermodynamic analysis and comparison of two-stage chloride heat transformers.

Author(s) : YU Y. Q., ZHANG P., WANG C., et al.

Summary

A two-stage heat transformer is superior to a single-stage one because it has higher efficiency or temperature lift. This paper carries out a systematic study on two-stage chloride heat transformers. On the basis of chlorides selection, four kinds of commonly used cycles, the resorption cycle (3S/G), double-effect resorption cycle (3S/G), two internal heat recovery resorption cycles (3S/G and 4S/G) are analyzed and compared according to the COP, exergy efficiency, temperature lift and some operational parameters. Among these four cycles, the resorption one (3S/G) is proved to be the best for driven heat temperature no more than 100°C. The double-effect resorption cycle (3S/G) has the highest COP, but lowest temperature lift. The two internal heat recovery resorption cycles (3S/G and 4S/G) have similar operating principles, but the 3S/G one is found to be the best at the driven heat temperature of 120°C because its system pressure is smaller.

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Pages: ICR07-E2-1058

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Details

  • Original title: Thermodynamic analysis and comparison of two-stage chloride heat transformers.
  • Record ID : 2007-2595
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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