Heat exchange – With coated – roughened or polished surface
Patent
1975-04-17
1978-03-14
Myhre, Charles J.
Heat exchange
With coated, roughened or polished surface
60 3966, 60260, 60267, 165169, 2391271, F02K 1102
Patent
active
040786048
ABSTRACT:
In a heat exchanger wall construction, such as used in regeneratively cooled combustion chambers for liquid fueled rocket engines, the wall construction consists of an inner wall with cooling channels spaced apart by webs. The cooling channels are open on one surface of the inner wall. An outer wall contacts the webs of the inner wall and forms a closure over the openings from the cooling channels. The outer wall consists of an intermediate layer electro-deposited on the surface of the inner wall in which the cooling channels are formed so that it provides a closure surface for the channels. The surfaces of the channels within the inner wall are coated by electro-depositing a layer of gold on them. After forming the gold layer on the surfaces of the cooling channels, the outer surfaces of the webs are etched so that the gold layer extends outwardly from the outer surface of the webs. Next the intermediate layer is deposited and it can be either a single layer or multi-layered. The inner surface of the intermediate layer, whether it is of a single or multi-layered construction, is formed of gold. When the intermediate layer is formed of multiple layers, alternating layers of gold and copper are used.
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Butter Karl
Christl Manfred
Dederra Helmut
Kaufmann Michael
Lechner Manfred
Messerschmitt-Bolkow-Blohm GmbH
Myhre Charles J.
Richter Sheldon
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