Eur. Phys. J. AP
Volume 8, Number 1, October 1999
|Page(s)||71 - 75|
|Published online||15 October 1999|
Heat exchanger effectiveness in unsteady state
Laboratoire de Thermomécanique, UTAP, EA 2061, Faculté des Sciences, B.P. 1039, 51687
Corresponding author: firstname.lastname@example.org
Revised: 9 July 1999
Accepted: 16 July 1999
Published online: 15 October 1999
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.
PACS: 44.90.+c – Other topics in heat transfer
© EDP Sciences, 1999
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