The effect of flow arrangement on the pressure drop of plate heat exchangers

Abstract For the optimal design of plate heat exchangers (PHEs), an accurate thermal–hydraulic model that takes into account the effect of the flow arrangement on the heat load and pressure drop is necessary. In the present study, the effect of the flow arrangement on the pressure drop of a PHE is investigated. Thirty two different arrangements were experimentally tested using a laboratory scale PHE with flat plates. The experimental data was used for (a) determination of an empirical correlation for the effect of the number of passes and number of flow channels per pass on the pressure drop; (b) validation of a friction factor model through parameter estimation; and (c) comparison with the simulation results obtained with a CFD (computational fluid dynamics) model of the PHE. All three approaches resulted in a good agreement between experimental and predicted values of pressure drop. Moreover, the CFD model is used for evaluating the flow maldistribution in a PHE with two channels per pass.

[1]  Sadik Kakaç,et al.  Heat Exchangers: Selection, Rating, and Thermal Design, Second Edition , 1997 .

[2]  Bengt Sundén,et al.  An experimental investigation of the port flow maldistribution in small and large plate package heat exchangers , 2006 .

[3]  H. Martin,et al.  Flow distribution and pressure drop in plate heat exchangers—II Z-type arrangement , 1984 .

[4]  Fantu A. Tereda,et al.  Experimental Investigation on Port-to-Channel Flow Maldistribution in Plate Heat Exchangers , 2007 .

[5]  J.-C. Leuliet,et al.  Etude de la perte de charge dans des échangeurs de chaleur à plaques traitant des produits non newtoniens , 1987 .

[6]  Edward Alfred Donald Saunders.  Heat exchangers : selection, design & construction , 1988 .

[7]  Jorge Andrey Wilhelms Gut,et al.  Experimental and numerical heat transfer in a plate heat exchanger , 2006 .

[8]  Jorge Andrey Wilhelms Gut,et al.  Thermal model validation of plate heat exchangers with generalized configurations , 2004 .

[9]  Jorge Andrey Wilhelms Gut,et al.  Optimal configuration design for plate heat exchangers , 2004 .

[10]  R. M. Manglik,et al.  Enhanced Heat Transfer Characteristics of Viscous Liquid Flows in a Chevron Plate Heat Exchanger , 1999 .

[11]  R. A. Mashelkar,et al.  Heat Transfer Equipment Design , 1988 .

[12]  J.-C. Leuliet,et al.  Écoulements et transferts de chaleur dans les Échangeurs à plaques traitant des produits visqueux newtoniens et pseudoplastiques 1. Modélisation des variations du diamètre hydraulique , 1990 .

[13]  B. Prabhakara Rao,et al.  Effect of Flow Distribution to the Channels on the Thermal Performance of the Multipass Plate Heat Exchangers , 2004 .