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Heat exchanger effectiveness in unsteady state

Published online by Cambridge University Press:  15 October 1999

T. H. Mai ,
N. Chitou  and
J. Padet
T. H. Mai*
Affiliation:
Laboratoire de Thermomécanique, UTAP, EA 2061, Faculté des Sciences, B.P. 1039, 51687 Reims, France
N. Chitou
Affiliation:
Laboratoire de Thermomécanique, UTAP, EA 2061, Faculté des Sciences, B.P. 1039, 51687 Reims, France
J. Padet
Affiliation:
Laboratoire de Thermomécanique, UTAP, EA 2061, Faculté des Sciences, B.P. 1039, 51687 Reims, France
*
th.mai@univ-reims.fr
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Abstract

A method is proposed to determine the thermal effectiveness of heat exchangers in situ, when one of the fluids is submitted to any kind of flow rate variations. It leads to the definition of the average effectiveness in unsteady state, which forms an extension of the classical effectiveness used in steady state. It requires an unsophisticated equipment of measurement and should lead to an easy and continuous control of the fouling of heat exchangers.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 8 , Issue 1 , October 1999 , pp. 71 - 75
Copyright
© EDP Sciences, 1999

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References

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