Reflectors for solar thermal systems and methods for producing same

US10365463B2 · kind B2 · utility

Assignees

• ThyssenKrupp Steel Europe AG · DE
• thyssenkrupp Rasselstein GmbH · DE

Inventors

• Bernd Schuhmacher · Dortmund, DE
• Stephan Drewes · Mönchengladbach, DE
• Karl-Heinz Kopplin · Essen, DE
• Winfried Höhn · Neuwied, DE
• Lothar Patberg · Aachen, DE
• Mark Hirt · Bochum, DE

Key dates

• Filing date: Nov 7, 2014
• Grant date: Jul 30, 2019
• Expiry date: Nov 7, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/40
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A reflector for helio-thermal systems may include a metallic carrier plate and a reflective coating that is applied to the carrier plate and is constructed from at least one metallic reflective layer and at least one protective layer applied to the reflective layer. Such reflectors have high reflective capabilities, are robust in relation to mechanical stress, and can be manufactured cost effectively. Such reflectors are also lightweight and dimensionally stable due to the fact that the carrier plate may be formed from a sandwich plate having at least one nonmetallic intermediate layer disposed between an upper and lower metallic cover plate. The upper cover plate may have a smoothed surface to which the reflective layer can be applied. The smoothed surface prior to the reflective layer being applied may have an arithmetic mean surface parameter Ra of less than 0.03 μm. Methods for manufacturing such reflectors are also disclosed.