ARTICLE:

• Unsteady Heat Transfer Modeling of Heat Exchangers  download article

Fernnand Fragnaud
Laboratoire d'énergétique I.S.I.T.E.M., La Chantrerie, CP 3023, 44087 Nantes, FRANCE

ABSTRACT

In unsteady-state heat transfer, one must take into account the heat capacity of the solid material. Here, we take up the problem of the solid walls by a periodic method which gives without simplification the heat transfer across the wall in a form that is very easy to use. Then we only need a spacial partition. In case of a step input, the step responses are well obtained by sommation of a Fourier series.

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