| 摘要 |
1,182,921. Cooling cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. 28 July, 1967 [29 July, 1966], No. 34229/66. Addition to 1,057,426. Heading H2C. [Also in Divisions F4 and H1] The invention of Specification 1,057,426 is modified by having a return pipe 11 provided with four or more heat exchangers 13-18 which may be partly or wholly below ground level and have their primary circuits in series with or forming part of the return pipe. The primary coolant may be oil pumped through or outside the cables 1, 2, 3 and cooled by atmospheric air in the heat exchangers which may have one or more attenuators and a single or composite stack above ground level for admitting and expelling the air. Alternatively the secondary circuits of the heat exchangers may be fed from a water main or mains. The heat exchanger may be that described and claimed in the divisional Specification 1,182,923. |
