Electrical thermal storage heat sink for space heater

Electric heating – Heating devices – Combined with container – enclosure – or support for material...

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126400, F24H 700, H05B 100

Patent

active

045700524

ABSTRACT:
A process for creating a thermal storage heat sink includes providing a mass of a salt or a salt mixture held in a hollow container having a wall made of electrically conductive material and having an insulated central electrode extending into the salt mass, installing a layer of an electrically conductive material of less density than the salt on top of and in contact with the salt mass to conduct electrical energy from the electrode to the container wall, and then heating the salt mass to a molten state by establishing an electric circuit from a power source through the electrode, the layer of conductive material and the container wall sufficient to melt the salt in contact with the conductive layer. This process is carried on by an electric thermal storage device including a hollow container made of a noncorrosive electrical conducting material, an electrode extending vertically into the container and insulated therefrom, a solid body of a salt or a salt mixture installed within the lower portion of the container and surrounding the portion of the electrode extending downwardly from above the level of the salt body, a layer of particulate electrical conductive material on top of and engaging the salt body and extending from the electrode to the container wall, the particulate material being of lighter weight than the salt which forms the salt body, and devices on the body and the electrode for electrically connecting both in an electrical circuit through the layer of particulate material.

REFERENCES:
patent: 3053705 (1962-09-01), Hewson
patent: 3400249 (1968-09-01), Mekjean
patent: 3722445 (1973-03-01), Karig
patent: 3737620 (1973-06-01), Harvey
patent: 4220196 (1980-09-01), Gawron

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