A new approach for thermal performance calculation of cross-flow heat exchangers

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Elsevier B.V.


A new numerical methodology for thermal performance calculation in cross-flow heat exchangers is developed. Effectiveness-number of transfer units (epsilon-NTU) data for several standard and complex flow arrangements are obtained using this methodology. The results are validated through comparison with analytical solutions for one-pass cross-flow heat exchangers with one to four rows and with approximate series solution for an unmixed-unmixed heat exchanger, obtaining in all cases very small errors. New effectiveness data for some complex configurations are provided. (c) 2005 Elsevier Ltd. All rights reserved.



thermal effectiveness, NTU, cross-flow heat exchangers, numerical simulation

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International Journal of Heat and Mass Transfer. Oxford: Pergamon-Elsevier B.V., v. 48, n. 18, p. 3880-3888, 2005.