Bulb-type solar energy collector
The disclosure relates to a bulb-type solar energy collector device comprising a hollow glass body shaped with a parabolic interior surface that is coated with specular finish of a metal, e.g., silver, and includes an apex aperture and integral hollow yoke. A hollow glass, bulb-shaped absorber element is exteriorly coated with a wave length selective coating. The bulb-shaped element includes a tubular hollow stem dependent from the bulbar portion and fixed in the yoke of the glass body so that the central axis of the stem and bulbar end portion is along the focal axis of the parabolic reflecting surface. A cover plate is sealed over the enlarged end of the reflecting surface enclosing the interior mirror surface in a chamber which is evacuated to substantial vacuum, e.g., 10/sup -4/ torr or greater vacuum. A working media is circulated from a source in a manifold through the interior volume of the absorber element to remove the solar energy absorbed thereby as heat and the media is returned to the manifold. The solar energy laden media is available for heating, cooling or power generating uses.
- Assignee:
- Owens-Illinois, Inc.
- Patent Number(s):
- US 4048982
- OSTI ID:
- 7012684
- Country of Publication:
- United States
- Language:
- English
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