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Evaluation of resisdence time measurements on heat exchangers for the determination of dispersive Peclet numbers

Evaluation of resisdence time measurements on heat exchangers for the determination of dispersive... Abstract The recently developed special unity Mach number dispersion model prescribes the corrections to heat transfer coefficients which are simple functions of the dispersive Peclet numbers. They can be determined through the residence time measurements. An evaluation method is described in which the measured input and response concentration profiles are numerically Laplace transformed and evaluated in the frequency domain. A characteristic mean Peclet number is defined. The method is also applied to the parabolic dispersion model and the cascade model. A calculated example of a tube bundle with maldistribution and backflow demonstrates the suitability of the evaluation method. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Thermodynamics de Gruyter

Evaluation of resisdence time measurements on heat exchangers for the determination of dispersive Peclet numbers

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Publisher
de Gruyter
Copyright
Copyright © 2014 by the
ISSN
2083-6023
eISSN
2083-6023
DOI
10.2478/aoter-2014-0016
Publisher site
See Article on Publisher Site

Abstract

Abstract The recently developed special unity Mach number dispersion model prescribes the corrections to heat transfer coefficients which are simple functions of the dispersive Peclet numbers. They can be determined through the residence time measurements. An evaluation method is described in which the measured input and response concentration profiles are numerically Laplace transformed and evaluated in the frequency domain. A characteristic mean Peclet number is defined. The method is also applied to the parabolic dispersion model and the cascade model. A calculated example of a tube bundle with maldistribution and backflow demonstrates the suitability of the evaluation method.

Journal

Archives of Thermodynamicsde Gruyter

Published: Jun 1, 2014

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