Heat exchange – With repair or assembly means
Patent
1985-07-01
1990-01-02
Ford, John
Heat exchange
With repair or assembly means
165143, 165166, 228175, 228183, 291573D, F28F 2108, F28F 310
Patent
active
048906700
ABSTRACT:
To permit high-temperature differential cross flow of an initially cool, heat absorbing medium and an initially hot, heat releasing medium, with temperature differences in the order of 1000.degree. and higher, and to prevent localized thermal overload, the heat exchanger is a two-stage heat exchanger, with plate packages (5, 6) which are serially passed by the media, typically gaseous media. The first package (5) forms a preheater stage and the second package (6) forms a final heater stage. Connecting ducts (9, 10) are provided and so arranged that the initially hot fluid medium is conducted through flow channels in the second heater stage which receives heat absorbing medium which has already passed through the preheater stage, so that it has already been preheated, thereby reducing the temperature difference between the preheated heat absorbing medium and the initially hot, heat releasing medium. The heat releasing medium, having been cooled in the final heater stage, is then passed to the preheater stage where it transfers heat to the initially cool heat absorbing medium, which is directed to its inlet. The plate packages comprise flat plates, formed with corrugations, for example extending at an angle of 30.degree. with respect to the flow direction of the fluid.
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Ford John
M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
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