Patent ID: 8893319
Filing Date: 2014-11-25
Classification: E03C,F24D,F28D,Y02B

Abstract:
1. A heat exchanger device comprising: a first flow conduit arranged for flow of a first fluid from an inlet to an outlet thereof; and a second flow conduit arranged for flow of a second fluid flow from an inlet to an outlet thereof; the second flow conduit includes a sequential series of generally parallel or similarly oriented or shaped sections providing a serpentine or convoluted second flow path therethrough; the second flow conduit is thermally conductive for heat transfer between fluids in the first and second flow conduits; a flow path for flow through the first flow conduit being substantially transverse to a direction of alignment of at least a predominant proportion of the second flow conduit; the first and second conduits being arranged overall for counterflow heat exchange; the first conduit comprising a passageway having at least one interior wall extending therealong and located between the inlet and outlet thereof, the passageway being configured for flow of fluid in a layer formation therethrough with the layers being of generally uniform thickness laterally across a flow front of fluid flowing through the first flow conduit; surfaces of the first and second conduits are arranged to be in contact with fluid in the first conduit; surfaces of the first and second conduits are configured and shaped such that, in moving along a flow path through the first flow conduit, a portion of height of total available open area for flow of the layer through the first flow conduit is inversely proportional to a width of the total available open area of flow so as to mitigate against substantial changes in a cross-sectional area of the available open area of flow, and the cross sectional area is proportional to a total perimeter of the available open area for mitigating against substantial changes in the total perimeter.