Batteries: thermoelectric and photoelectric – Thermoelectric – Nuclear energy type
Patent
1989-08-31
1991-10-15
Hunt, Brooks H.
Batteries: thermoelectric and photoelectric
Thermoelectric
Nuclear energy type
376456, 429 82, 429 89, H01L 3700
Patent
active
050571605
ABSTRACT:
A microporous plug is provided which serves to seal a vessel so as to prevent the bulk flow of gases through an outlet. The pores of said microporous plug are sized so as to permit the transport of gases to and from the vessel interior by Knudsen diffusion. In preferred embodiments, the pores of the plug are sized so as to release helium from the interior of a vessel and restrict the transport of carbon dioxide into the vessel from the surrounding atmosphere by Knudsen diffusion. Such embodiments are particularly useful on Mars where the helium is transported into an environment of higher pressure. In other embodiments, the microporous plug is used in conjunction with an absorber positioned within the vessel to react with atmospheric gases that pass through the plug, such as carbon dioxide. Also provided are radioisotope thermoelectric generators that incorporate a microporous plug and optionally an absorber.
REFERENCES:
patent: 3268745 (1966-08-01), Schalliol
patent: 3578442 (1971-05-01), Anderson
patent: 3697377 (1972-10-01), Gauthron
patent: 3723742 (1973-03-01), Aranguren et al.
patent: 3767930 (1973-10-01), Sayell
patent: 3892626 (1975-07-01), Hirose
Perry, John H., Chemical Engineers' Handbook, 4th Ed., McGraw-Hill Book Co., New York, N.Y., 1963, pp. 17-33.
Kamal John A.
Kosky Philip G.
Ward, III William J.
Carroll Chrisman D.
Davis Jr. James C.
General Electric Company
Hunt Brooks H.
Pittman William H.
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