Stoves and furnaces – Heaters – Surface
Patent
1975-06-23
1976-08-10
Sprague, Kenneth W.
Stoves and furnaces
Heaters
Surface
165 1, 126263, 126400, F24J 302
Patent
active
039735524
ABSTRACT:
A cyclic method of storing and recovering thermal energy utilizing a particulate bed of a decomposable heat storage material selected from the group consisting of the hydroxides of magnesium, calcium, and barium. The bed of heat storage material is confined within a container adjacent a water-permeable wall of the container. Thermal energy of chemical decomposition is stored by heating the bed of selected hydroxide to a temperature within the range of from 300.degree. to 900.degree.C and above the decomposition temperature of the selected hydroxide for a time sufficient to decompose at least a part of the selected hydroxide to form the corresponding oxide and water vapor. The water vapor is withdrawn by passing a carrier gas into contact with the water-permeable wall of the container to absorb the water vapor permeating therethrough. The stored thermal energy is recovered by passing a water-laden carrier gas into contact with the water-permeable wall, whereby the water vapor permeates through the wall into contact with the oxide to reform the selected hydroxide and generate heat of reaction which is removed by the carrier gas.
REFERENCES:
patent: 2808494 (1957-10-01), Telkes
patent: 2856506 (1958-10-01), Telkes
patent: 3642059 (1972-02-01), Greiner
DeLarvin Clark E.
Humphries L. Lee
Kolin Henry
Rockwell International Corporation
Sprague Kenneth W.
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