Plate heat and mass exchanger with edge extension

Details Plate heat and mass exchanger with edge extension Plate heat and mass exchanger with edge extension

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 5/00 (2006.01) F28D 5/02 (2006.01)

Patent

CA 2554512

Heat exchanger plates (6) for indirect evaporative coolers, of the type having a dry side (9) having low permeability to an evaporative liquid (22) and formed to allow a product fluid (1) to flow over a heat transfer area of its surface, a wet side (10) designed to have its surface wet by an evaporative liquid (22), and formed to allow a working gas (2) to flow over its surface to evaporate the evaporative liquid, further include edge extensions (20) formed beyond the heat exchange area of the plates to facilitate removal of excess evaporative liquid. The edge extensions may slant or curve away from the wet side of the plates to assist in liquid removal. The plates may be used in a variety of configurations.

La présente invention a trait à des plaques d'échangeur thermique (6) destinées à des refroidisseurs évaporatifs indirects, du type comportant une face sèche (9) à faible perméabilité vis-à-vis d'un liquide évaporatif (22) et conformée pour permettre la circulation d'un produit fluide (1) sur une zone de transfert thermique de sa surface, une face humide (10) conformée pour que sa surface soit humidifiée par un liquide évaporatif (22), et agencée pour permettre un écoulement d'un gaz de travail (2) à sa surface pour l'évaporation du liquide évaporatif, comportant en outre des prolongements de bords (20) formés au-delà de la zone d'échange thermique des plaques pour faciliter l'élimination de liquide évaporatif en excès. Les prolongements de bords peuvent être inclinés ou incurvés en éloignement de la face humide des plaques pour contribuer à l'élimination de liquide. Les plaques peuvent être utilisées dans une variété de configurations.

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