Solar heater with bondless honeycomb heat trap

Stoves and furnaces – Tool having fluid fuel burner – Curling iron

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Details

126441, 126417, F24J 302

Patent

active

043345247

ABSTRACT:
A solar heater including a housing having a transparent front wall for passing incident solar radiation, a radiation absorbent collector element positioned in the housing and arranged to accept incident solar radiation passing through the front wall, means for passing a fluid medium to be heated through the housing in heat transfer relationship with the collector element and a transparent heat trap disposed in the housing between the collector element and the front wall. The heat trap is made from a cellular structure containing a multiplicity of adjacent cells having walls which are integrally formed with the walls of other cells in one continuous piece from a thermoformable material. The thermoformable material used for the heat trap may be glass or a clear plastic composition which is opaque to infrared radiation emitted from the collector element.

REFERENCES:
patent: 3875925 (1975-04-01), Johnston
patent: 4018211 (1977-04-01), Barr
patent: 4019496 (1977-04-01), Cummings
patent: 4034736 (1977-07-01), Telkes
patent: 4062352 (1977-12-01), Lesk
patent: 4068361 (1978-01-01), Root
Hollands, "Honeycomb Devices in Flat-Plate Solar Collectors", Solar Energy, vol. 9, No. 3, pp. 159-164 (1965).
Chun et al., "Effect of a Mylar Honeycomb Layer on Solar Collector Performance", presented at the 1974 Winter ASME meeting, Paper No. 74-WA/HT-11.
Marshall et al., "Use of Lexan and Kapton Honeycombs to Increase Solar Collector Efficiency", presented at National Heat Transfer Conference, Aug. 8-11, 1976.
Baldwin et al., "Performance of Transparent Glass Honeycombs in Flat Plate Collectors", School of Engineering and Applied Science, University of California, Los Angeles, California.
Buchberg et al., "Design Considerations for Solar Collectors with Glass Cylindrical Cellular Covers", University of California, Los Angeles, California.

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