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Solar heat collector

  • US 4,056,094 A
  • Filed: 02/23/1976
  • Issued: 11/01/1977
  • Est. Priority Date: 02/23/1976
  • Status: Expired due to Term
First Claim
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1. In a solar heating panel having an absorber panel for converting radiant energy into heat, a sheet of solid material substantially transparent to visible light for transferring such energy to said absorber panel, said absorber panel and said sheet of solid material defining a space for a heat transfer liquid, the improvement comprising:

  • internally-reflecting prism means on the surface of said sheet of solid material facing towards said space for heat transfer liquid, for substantially entirely reflecting visible light that is incident upon said panel when said heat transfer liquid is not present.

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