Patent · US Active

Central tube for a linear concentrating solar thermal power plant, having an absorber layer, and method for applying said absorber layer

US9267207B2 · kind B2 · utility

1Cited by

5References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ursus Krüger · Berlin, DE
Daniel Reznik · Berlin, DE
Oliver Stier · Berlin, DE

Key dates

Filing date	Sep 14, 2010
Grant date	Feb 23, 2016
Priority date	—
Expiry date	Feb 28, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/40
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A central tube for linear concentrating solar thermal power plants, has an absorber layer. The absorber layer is generated by cold gas sputtering, wherein suitable method parameters can in particular generate an increased surface roughness by means of pores in the surface region of the absorber layer. An absorber layer can thus be advantageously produced, having a quadratic roughness of no more than 1 μm, measured in a close range of no more than 50 μm diameter, and preferably being made of a corrosion-proof hard alloy comprising tungsten carbide, in particular WC—CoCr, WC—Co, WC—FeCo, WC—FeC, WC—FeNi, WC—Ni or WC—NiCr.

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