Heat exchange – With impeller or conveyor moving exchange material – Mechanical gas pump
Patent
1996-05-17
1998-04-07
Flanigan, Allen J.
Heat exchange
With impeller or conveyor moving exchange material
Mechanical gas pump
165121, 165155, 165179, 165DIG305, 165DIG316, F28D 710
Patent
active
057353425
ABSTRACT:
A heat exchanger system including an outer duct housing a powered fan at one end. A heat exchanger is positioned in line with the fan within the duct and includes two nested pipes. Each pipe includes radially outward fins and radially inward fins. The radially inward fins on the outer pipe and the radially outward fins on the inner pipe are interdigitated. Appropriately positioned radial dividers extend fully between the bodies of the two pipes to divide the space between pipes into segments. End caps placed on the ends of the pipes include baffles which appropriately divide annular manifolds defined between the pipes and between the ends of the fins and the end caps in order that four passes are possible through the length of the heat exchanger. The radial dividers may be asymmetrically positioned to accommodate changes in volume with condensation of the fluid passing between the inner and outer pipes.
REFERENCES:
patent: 1529190 (1925-03-01), Kettering
patent: 1881771 (1932-10-01), Lyman
patent: 3120868 (1964-02-01), Ballantine
patent: 4004634 (1977-01-01), Habdas
patent: 4505326 (1985-03-01), Hazen
patent: 4862955 (1989-09-01), Itakura
patent: 5529118 (1996-06-01), Nitta
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