Abstract
Perforated plates interspaced with spacers are effectively used in recuperative heat exchangers. In this paper, we present generalized correlations for Colburn factor and friction factor of perforated plates as functions of all geometrical variables and Reynolds number. Heat transfer and flow friction data are generated through CFD modelling on a stack of perforated plates. The model is validated with the published experimental data. Correlations are developed through regression analysis over a large number of computed data generated under varying parametric conditions. Effects of various geometrical parameters on the thermos-hydraulic characteristics of perforated plates are discussed in terms of Colburn factor, friction factor and modified area goodness factor.
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