P2_9 Superconducting vs. Overhead Lines
Abstract
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High temperature (below liquid nitrogen boiling temps.) superconductors have potential applications in power transmission lines as they can carry currents with effectively no resistance. This report gives a first order estimate of losses in presently used overhead cables at around 15% of power output. To better this efficiency a superconductor would need to be clad in an insulator with an outer diameter of greater than 1.93 times that of its inner diameter, provided a liquid nitrogen refrigeration pump could work at 10% efficiency.
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