Patent · US Expired

Condensation heat-transfer device

US6942022B2 · kind B2 · utility

56Cited by

5References

8Claims

0Family size

Assignee

ALSTOM Technology Ltd · CH

Inventors

Francisco Blangetti · Baden, CH
Harald Reiss · Heidelberg, DE

Key dates

Filing date	Nov 7, 2001
Grant date	Sep 13, 2005
Priority date	—
Expiry date	Apr 16, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28F2245/04
WIPO fieldSurface technology, coating
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.