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Thermodynamic analysis of absorption chillers: internal dissipation and process average temperature.

Author(s) : NG K. C., TU K., CHUA H. T., GORDON J. M., KASHIWAGI T., AKISAWA A., SAHA B. B.

Type of article: Article

Summary

Absorption chillers operate well below their reversible or endoreversible limits because their thermodynamic behaviour is dominated by internal dissipation, a significant part of which occurs in the chiller's heat exchangers. This fact has summarily been omitted from earlier analyses. It translates into incorrect values for the refrigerant process-average temperature, and leads to noticeable errors in chiller diagnostics and optimization. Using experimental measurements from an absorption chiller, in concert with a computer simulation code and an analytic thermodynamic model, the authors fortify these claims with quantitative examples. They also substantiate that commercial absorption chiller technology has empirically evolved to close to optimal operating conditions.

Details

  • Original title: Thermodynamic analysis of absorption chillers: internal dissipation and process average temperature.
  • Record ID : 1999-1551
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 18 - n. 8
  • Publication date: 1998/08

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