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Solar control panel

  • US 4,487,197 A
  • Filed: 04/23/1982
  • Issued: 12/11/1984
  • Est. Priority Date: 04/29/1981
  • Status: Expired due to Fees
First Claim
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1. A glazing panel for transmitting radiant energy including visible light energy, comprising:

  • first and second clear glass sheets;

    support means positioning said glass sheets in parallel spaced relation, such that one surface of said first glass sheet defines an exterior surface of said panel;

    a first coating on said one surface of said first glass sheet for providing solar shading, said first coating being an energy absorbing oxide coating; and

    a second coating on the surface of said first sheet which faces said second sheet, said second coating being made of gold;

    wherein said first glass sheet has a thickness of 4 mm, said second glass sheet has a thickness of 6 mm, said first coating consists of 62%, CoO, 26% Fe2 O3 and 12% Cr2 O3 and has a thickness between 35 and 45 nm, said second coating has a thickness of 14 nm and an emissivity of 0.09, said panel further comprises an undercoating of bismuth oxide located on said first glass sheet beneath said second coating, said undercoating being 1 nm thick, said first glass sheet and said first coating together having an absorption factor of 22.0%, and said panel having a luminous transmission factor of 20.6%, a total energy transmission factor of 18.7% and a color purity when viewed in reflection of 8%.

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