Chemistry: electrical current producing apparatus – product – and – Process of cell operation
Patent
1981-01-21
1982-06-01
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Process of cell operation
429104, 429120, 429112, H01M 618, H01M 1050
Patent
active
043328660
ABSTRACT:
In a method of regulating the temperature of a system in which exothermic type reactions take place at temperatures of several hundreds of degrees and which are followed by stoppage periods, the system (1) is put in contact with a first substance (4) whose boiling temperature (T2) is close to the required temperature (T) of the system, and heat which results from the exothermic reactions is used to boil the first substance (4). Thereafter heat which comes from the condensation of the vapor evolved by said boiling is used to heat a second substance (5) to its melting point (T1), the second substance (5) being chosen so that it melts at a temperature close to but lower than the boiling temperature (T2) of the first substance (4). In operation the second substance (5) is kept at a temperature which is substantially constant and a little higher than its melting point (T1) until the end of a period of exothermic reaction. During the following period of stoppage the second substance (5) solidifies, whereby the temperature of the system is kept substantially constant until the end of the stoppage period. The method is useful in sodium/sulphur and lithium/iron sulphide electric battery systems.
REFERENCES:
patent: 3404035 (1968-10-01), Kummer et al.
patent: 3864170 (1975-02-01), Krieger
patent: 3915741 (1975-10-01), Kogiso et al.
patent: 3976503 (1976-08-01), Minck et al.
patent: 4086396 (1978-04-01), Mathers et al.
patent: 4087591 (1978-05-01), Bowers et al.
patent: 4246325 (1981-01-01), Hatch
Jacquelin Jean
Pompon Jean-Paul
Skapars Anthony
Societe Anonyme Dite: Compagnie Generale d'Electricite
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