Electricity: conductors and insulators – With fluids or vacuum – With cooling or fluid feeding – circulating or distributing
Patent
1974-09-30
1976-03-23
Grimley, Arthur T.
Electricity: conductors and insulators
With fluids or vacuum
With cooling or fluid feeding, circulating or distributing
165105, H01B 734
Patent
active
039461424
ABSTRACT:
An apparatus for cooling underground power cables situated in a tubular cable enclosure. Cooling of underground power cables is presently effected by the circulation of water or oil through pipes within which the cables are situated. The oil or water is then circulated through air or water-cooled heat exchangers which are uniformly spaced along the transmission line. However, a substantial flow of liquid is required to extract a useful quantity of heat, and extensive equipment is necessary to effect this flow of liquid. The subject invention proposes a relatively inexpensive and more efficient apparatus to cool underground cables. The apparatus comprises an enclosed chamber adapted to enclose a portion of a length of underground power cables. A liquid supply inlet is provided to the enclosed chamber, as well as an evaporated liquid outlet from the enclosed chamber. Means are provided to distribute liquid entering the enclosed chamber through the inlet within the enclosed chamber whereby evaporation of the liquid by heat generated within the underground power cables effects the cooling thereof. Means are also provided to initiate removal of evaporated liquid through the evaporated liquid outlet. The process according to the subject invention comprises the supplying of liquid along a length of an enclosed chamber extending along a portion of a length of the power cables, such that the liquid is distributed within the enclosed chamber. A flow of pressurized air is directed along the length of the enclosed chamber to assist the evaporation process of the liquid and to carry evaporated liquid away from the power cables. The pressurized air carrying the evaporated liquid is then removed from the enclosed chamber.
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Bonneville Jacques
Kellow Mazin
Vansant James
Grimley Arthur T.
Mack Peter G.
Robic Raymond A.
Schwartz Arthur
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