Refrigeration – Processes – Gas and liquid contact
Reexamination Certificate
2007-04-03
2007-04-03
Jiang, Chen Wen (Department: 3744)
Refrigeration
Processes
Gas and liquid contact
C062S314000, C165S166000, C165S165000, C261S153000
Reexamination Certificate
active
10397901
ABSTRACT:
An improved method and apparatus for indirect evaporative cooling of a fluid stream to substantially its dew point temperature. Plate heat exchanger has perforations11and channels3, 4and5for gas or a low temperature for liquids on a dry side and wet side. Fluid streams1flow across the dry side9, transferring heat to the plate. Gas stream2flows across the dry side and through perforations to channels5on wet side10, which it then cools by evaporative cooling as well as conductive and radiative transfer of heat from plate. A wicking material provides wetting of wet side. In other embodiments, a desiccant wheel may be used to dehumidify the gas, air streams may be recirculated, feeder wicks13and a pump may be used to bring water from a water reservoir, and fans may be used to either force or induce a draft. The wicking material may be cellulose, organic fibers, organic based fibers, polyester, polypropylene, carbon-based fibers, silicon based fibers, fiberglass, or combinations of them. The device may be operated in winter months to scavenge heat from exhaust gases of a space and thus pre-heat fresh air, while simultaneously humidifying the fresh air.
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Gillan Alan D.
Gillan Leland E.
Heaton Timothy L.
Maisotsenko Valeriy
Bales Jennifer L.
Idalex Technologies, Inc.
Jiang Chen Wen
Macheledt Bales & Heidmiller LLP
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