Electricity: conductors and insulators – With fluids or vacuum – With cooling or fluid feeding – circulating or distributing
Patent
1976-01-27
1977-04-26
Grimley, Arthur T.
Electricity: conductors and insulators
With fluids or vacuum
With cooling or fluid feeding, circulating or distributing
174 15CA, H01B 1200
Patent
active
040202755
ABSTRACT:
Thermally contacting, oppositely streaming, cryogenic fluid streams in the same enclosure in a closed cycle that changes the fluid from a cool high pressure helium gas to a cooler reduced pressure helium gas in an expander so as to be at different temperature ranges and pressures respectively in go and return legs that are in thermal contact with each other and in thermal contact with a longitudinally extending superconducting transmission line enclosed in the same cable enclosure that insulates the line from the ambient at a temperature T.sub.1. By first circulating the fluid from a refrigerator at one end of the line as a cool gas at a temperature range T.sub.2 to T.sub.3 in the go leg, then circulating the gas through an expander at the other end of the line where the gas becomes a cooler gas at a reduced pressure and at a reduced temperature T.sub.4 and finally by circulating the cooler gas back again to the refrigerator in a return leg at a temperature range T.sub.4 to T.sub.5, while in thermal contact with the gas in the go leg, and in the same enclosure therewith for compression into a higher pressure gas at T.sub.2 in a closed cycle, where T.sub.2 >T.sub.3 and T.sub.5 >T.sub.4, the fluid leaves the enclosure in the go leg as a gas at its coldest point in the go leg, and the temperature distribution is such that the line temperature decreases along its length from the refrigerator due to the cooling from the gas in the return leg.
REFERENCES:
patent: 3162716 (1964-12-01), Silver
patent: 3292016 (1966-12-01), Kafka
patent: 3432783 (1969-03-01), Britton et al.
patent: 3463869 (1969-08-01), Cooley et al.
patent: 3634597 (1972-01-01), Ziemek et al.
patent: 3638154 (1972-01-01), Sampson et al.
patent: 3646243 (1972-02-01), Graneau et al.
patent: 3697665 (1972-10-01), Doose et al.
patent: 3720777 (1973-03-01), Sampson et al.
patent: 3749811 (1973-07-01), Bogner et al.
patent: 3800062 (1974-03-01), Kataoka et al.
patent: 3808351 (1974-04-01), Moisson-Franckhauser et al.
patent: 3864508 (1975-02-01), Beck
patent: 3902000 (1975-08-01), Forsyth et al.
patent: 3917897 (1975-11-01), Hildebrandt
patent: 3946141 (1976-03-01), Schmidt
patent: 3950606 (1976-04-01), Schmidt
E. B. Forsyth, et al., The Technical Feasability of Superconducting Power Transmission: a case study, IEEE Power Engineering Society, 5-74, pp. 161-170.
H. M. Long, et al., Design Features of AC Superconducting Cables, Journal of Applied Physics, vol. 42, No. 1, Jan. 1971, pp. 155-162.
K. Haga, et al., Development of Liquid-Nitrogen-Cooled Cable, IEEE Conference Dallas, Tex. 1974, Underground Transmission & Distribution Conference.
Belkin Leonard
Carlson Dean E.
Cornish Cornell D.
Grimley Arthur T.
The United States of America as represented by the United States
LandOfFree
Superconducting cable cooling system by helium gas at two pressu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Superconducting cable cooling system by helium gas at two pressu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconducting cable cooling system by helium gas at two pressu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2088435