Patent · US Active

Radiation-selective absorber coating and absorber tube with said radiation-selective absorber coating

US8555871B2 · kind B2 · utility

2Cited by

16References

13Claims

0Family size

Assignee

SCHOTT SOLAR AG · DE

Inventors

Thomas Kuckelkorn · Idar-Oberstein, DE
Kamel Silmy · Mitterteich, DE
Sebastian Dreyer · Tirschenreuth, DE

Key dates

Filing date	Oct 13, 2010
Grant date	Oct 15, 2013
Priority date	—
Expiry date	Nov 10, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31678
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The radiation-selective absorber coating for absorber tubes of parabolic trough collectors includes two or more barrier layers (24a, 24b); an infrared reflective layer (21) on the barrier layers (24a, 24b); at least one cermet absorption layer (22) above the infrared reflective layer (21) and an antireflection layer (23) above the at least one cermet absorption layer (22). The two or more barrier layers (24a, 24b) include a first barrier layer (24a) of thermally produced oxide and a second barrier layer (24b) arranged above it. The second barrier layer (24b) is a cermet material including at least one oxide compound and at least one metal. The oxide compound is aluminium oxide, silicon oxide, nickel oxide and/or chromium oxide. The metal is molybdenum, nickel, tungsten and/or vanadium. The invention also includes an absorber tube with the absorber coating on it.

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