Solar heater with cavity and phase-change material

Details Solar heater with cavity and phase-change material Solar heater with cavity and phase-change material

1984-02-17

1986-10-28

Jones, Larry

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

126424, 126430, 126440, F24J 202

Patent

active

046192441

ABSTRACT:
A heating chamber is mounted on a first axis of rotation, and revolves through an angle .OMEGA. at a constant angular velocity. The first axis of rotation is adjustable through an angle .theta. to the horizontal according to the geographic latitude, and through an angle .phi. to the axis of rotation according to the season. The heating chamber is an insulated cavity with a small aperture. The sun's rays are focussed along a second axis normal to the first axis through a small aperture into the heating chamber. The heating chamber contains a phase change material which melts at about 180.degree. C., which provides heat at that temperature after sundown. In one embodiment, a structure includes a platen to supply heat to a cooking utensil. The platen has heat-conducting ribs attached to its bottom side, which dip into the phase-change material contained in an enclosure under the platen. The surface of the platen is maintained level by gravity.

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