Static structures (e.g. – buildings) – Lapped multiplanar surfacing; e.g. – shingle type – With spacing or space-forming feature
Patent
1991-10-21
1997-10-28
Mai, Lanna
Static structures (e.g., buildings)
Lapped multiplanar surfacing; e.g., shingle type
With spacing or space-forming feature
52606, 359613, 126698, 126685, E04D 100
Patent
active
056807341
ABSTRACT:
There is disclosed a solar energy control film and a siding panel to which such film is applied, the film having a multiplicity of lenticular lenses formed on one side thereof which are preferable about one-tenth to one millimeter wide and having on the surface opposite to that with the lenticular lenses an array of masking indentations in register with the lenticular lenses so that the film is effectively transparent for the passage of light (solar radiation passing through to an absorbing heat collector) only for rays impinging on a structure at prescribed elevation angles. Typically the masking indentations would be arranged to pass light at a low elevation angle corresponding to wintertime solar elevation at the latitude at which the structure is located. In particular embodiments, the indentations in the film are rendered non-transparent by being filled with a liquid or semi-liquid material including pigments or dyes to impart opacity, and in most cases reflectivity, to the material. A preferred method of forming the film is by simultaneously embossing the back and front surfaces with the indentations and lenticular lens configurations to assure highly accurate placement and registration, and thereby accurately control the angle range for which the film will be transparent to solar radiation. The space between indentations on the back surface of the film may be rendered and maintained transparent by pressing a transparent flat sheet or other sheet onto the back surface after the indentations have been filled or partly filled with the opaque liquid or semi-liquid material.
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Keegan Robert R.
Mai Lanna
University of Arkansas N.A.
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