Stoves and furnaces – Solar heat collector – With means to convey fluent medium through collector
Reexamination Certificate
2011-03-22
2011-03-22
McAllister, Steven B (Department: 3749)
Stoves and furnaces
Solar heat collector
With means to convey fluent medium through collector
C126S635000, C126S652000, C126S694000, C126S907000, C428S220000, C428S621000, C428S702000, C359S885000
Reexamination Certificate
active
07909029
ABSTRACT:
The radiation selective absorber coating of the invention includes two or more barrier layers arranged over each other on a substrate surface, an infrared-range reflective layer arranged on the two or more barrier layers, and at least an absorption layer arranged over the infrared-range reflective layer and a final antireflection layer arranged over the absorption layer. The absorber pipe, especially for a parabolic trough collector, is a steel pipe, on whose outer side the radiation selective absorber coating is applied. In the method of making the absorber pipe a first oxide barrier layer is provided on the outer side of the steel pipe by thermal oxidation, and then a second barrier layer, an infrared-range reflective layer, an absorption layer and a final antireflection layer are applied by gas-phase physical deposition.
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Georg Andreas
Graf Wolfgang
Hildebrandt Christina
Kuckelkorn Thomas
McAllister Steven B
Savani Avinash
Schott AG
Striker Michael J.
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