Refrigeration – Processes – Circulating external gas
Patent
1997-05-30
1998-12-08
Doerrler, William
Refrigeration
Processes
Circulating external gas
62 93, 165113, 165150, F25D 1706
Patent
active
058455051
ABSTRACT:
A heat exchanger comprising a precooler and reheater core adjacent a chiller core, first heat transfer passages extending through both cores through which incoming air passes in a first direction, second heat transfer passages extending through the chiller core through which coolant passes in heat exchange relationship with incoming air and perpendicular to the first direction, and third heat transfer passages extending through the precooler and reheater core through which cooled air from the chiller core passes in heat exchange relationship with the incoming air and perpendicular to the first direction. A conduit conducts chilled air from the chiller core to the third set of heat transfer passages.
Incoming air is chilled in the chiller core and thereafter exchanges heat with the incoming air in the precooler and reheater core to precool the incoming air to form water droplets and to raise the temperature of the chilled air to a usable temperature. The precooled and moist incoming air exchanges heat with coolant in the chiller core such that the air is chilled to a low temperature condensing water vapor therein. The first heat transfer passages include fins staggered and disposed substantially perpendicular to the flow to create an undulating pattern there along for moisture separation within the precooler and chiller cores. The crossflow arrangement of passages in the cores of the heat exchanger advantageously enables the air leaving the precooler and reheater core to enter the chiller core directly without any intermediate channeling or piping.
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Fijas David F.
Galus Timothy J.
American Precision Industries Inc.
Doerrler William
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