Fur-like photothermal converter surface

Details Fur-like photothermal converter surface Fur-like photothermal converter surface

1977-01-06

1978-10-03

Camby, John J.

Stoves and furnaces

Ovens

Domestic

126271, 237 1A, 136 89PC, F24J 302

Patent

active

041178297

ABSTRACT:
In order to reduce energy losses by convection and/or thermal radiation from the radiation-absorbing surface of a photothermal energy converter for the utilization of solar energy, the said surface is provided with a multiplicity of projecting fibres sufficiently close to one another to suppress convection, each fibre consisting of a material which is permeable to the incident luminous radiation to be absorbed and at least partly opaque to infrared thermal radiation which may be reemitted from the said surface whereby energy losses by radiation are reduced.
The fibres can be, for example, glass or plastic fibres and can be integral with or implanted in the said surface. Preferably, the fibres have diameters in the range 25 to 500 micrometers, a height of the order of 5 cm, and an average distance between fibres in the range 100 to 5000 micrometers.

REFERENCES:
patent: 2998006 (1961-08-01), Johnston
patent: 3194228 (1965-07-01), Bangues
patent: 3229682 (1966-01-01), Permutter et al.
patent: 3379394 (1968-04-01), Bialy
patent: 3780722 (1973-12-01), Swet
patent: 3902474 (1975-09-01), Pyle
patent: 3985116 (1976-10-01), Kapany
patent: 4005698 (1977-02-01), Cuomo et al.
patent: 4038964 (1977-08-01), Drew

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