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Effectiveness-number of transfer units relationships for heat exchanger complex flow arrangements.

Author(s) : PIGNOTTI A., SHAH R. K.

Type of article: Article

Summary

Heat exchanger performance (or terminal temperatures), size and fluid flow rates are related in a dimensionless form in terms of the exchanger effectiveness, number of transfer units and heat capacity rate ratio. Such relationships are essential for design and analysis of any heat exchangers. Since 1969, several very powerful methods have been developed to analyze complicated flow arrangements for two-fluid recuperators. These are matrix formalism, chain rule, and rules for exchangers with one fluid mixed, among others. These methods are briefly summarized in the paper with illustrative examples. 18 new recuperator flow arrangements have been analyzed and the results are presented in closed-form formulas.

Details

  • Original title: Effectiveness-number of transfer units relationships for heat exchanger complex flow arrangements.
  • Record ID : 1992-2650
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 35 - n. 5
  • Publication date: 1992/05

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