Plate heat and mass exchanger with edge extension

  • US 7,228,699 B2
  • Filed: 02/18/2005
  • Issued: 06/12/2007
  • Est. Priority Date: 02/18/2004
  • Status: Active Grant
First Claim
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1. A heat exchanger plate for use in an indirect evaporative cooling system, the plate comprising:

  • a dry side having low permeability to an evaporative liquid and formed to allow a product fluid to flow over a heat transfer area of its surface;

    a wet side designed to have its surface wet by an evaporative liquid, and formed to allow a working gas to flow over its surface to evaporate the evaporative liquid; and

    an edge extension formed at the edge of the plate, beyond the heat transfer area, for causing excess evaporative liquid to drip off the plate.

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