Condensation heat-transfer device

Details Condensation heat-transfer device Condensation heat-transfer device

2005-09-13

2005-09-13

Walberg, Teresa J. (Department: 3753)

Heat exchange

With coated, roughened or polished surface

C165S134100

Reexamination Certificate

active

06942022

ABSTRACT:
The heat transfer surfaces of a condensation heat exchanger are provided with a coating according to the invention which comprises a sequence of layers which includes at least one hard layer which comprises amorphous carbon or a plasma polymer and at least one soft layer which comprises amorphous carbon or a plasma polymer. The hard and soft layers are applied alternately, the first layer on the heat transfer surface being a hard layer and the last layer of the coating being a soft layer. The last, soft layer is distinguished in particular by hydrophobic properties. The layer sequence ensures condensation of drops and, at the same time, protects against drop impingement erosion.

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