Variable aperture, variable flux density, aerospace solar collec

Details Variable aperture, variable flux density, aerospace solar collec Variable aperture, variable flux density, aerospace solar collec

1985-11-21

1988-01-19

Focarino, Margaret A.

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

126451, 350628, 350607, 136246, F24J 302

Patent

active

047199032

ABSTRACT:
A trough-type reflecting solar concentrator and receiver system for aerospace use is disclosed. The reflecting surface is a thin flexible sheet attached to and disposed between curved ribs. The amount of the sheet reflecting sunlight can be changed by winding the unnecessary quantity of sheet onto a roll. The focal length of the curved ribs and therefore the sheet can be changed by flexurally deforming the curved ribs by applying end loads, causing a change in the flux density at the receiver. A similar result is achieved by changing the distance between the reflecting surface and the receiver. The receiver is a photovoltaic array, thermal absorber, or a combination of both. Means for proportioning the amount of energy incident on each type of receiver is disclosed. A spectral splitting thermal absorber with scattering capability is disclosed as a pre-filter for the photovoltaic array.

REFERENCES:
patent: 4056309 (1977-11-01), Harbison et al.
patent: 4106484 (1978-08-01), Dame
patent: 4173397 (1979-11-01), Simpson
patent: 4184482 (1980-01-01), Cohen
patent: 4243301 (1981-01-01), Powell
patent: 4263893 (1981-04-01), Pavlak et al.
patent: 4427838 (1984-01-01), Goldman
patent: 4493313 (1985-01-01), Eaton
patent: 4510923 (1985-04-01), Bronstein
patent: 4552438 (1985-11-01), Murphy

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