Transient Behaviour of Three-Fluid Crossflow Heat Exchanger: The Effect of Flow Non-Uniformities

ABSTRACT

A transient temperature response of three-fluid heat exchangers with finite core capacitance of the separating sheets is investigated numerically for the effect of flow nonuniformity. Step perturbation is provided in the central (hot) fluid inlet temperature. Beta flow-maldistribution model has been introduced for the flow nonuniformity. The responses are found dependent on the position of the fluid moving device.

Keywords: Finite difference, Flow-nonuniformity, Three-fluid heat exchanger, Transient Behaviour.

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