Heat exchanger effectiveness in unsteady state
Mai, T. H.; Chitou, N.; Padet, J.; Mai T. H.; Laboratoire de Thermomécanique, UTAP, EA 2061, Faculté des Sciences, B.P. 1039, 51687 Reims, France; Chitou N.; Laboratoire de Thermomécanique, UTAP, EA 2061, Faculté des Sciences, B.P. 1039, 51687 Reims, France; Padet J.; Laboratoire de Thermomécanique, UTAP, EA 2061, Faculté des Sciences, B.P. 1039, 51687 Reims, France
Журнал:
The European Physical Journal Applied Physics
Дата:
1999
Аннотация:
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.
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