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Technology: Generator sparks hope for cheap electricity

Technology: Generator sparks hope for cheap electricity

作者:阎艚  时间:2019-03-04 12:16:01  人气:

BRITISH researchers have built what they claim to be the world’s first electric generator from high temperature superconductors. At the heart of the generator is a coil of superconducting wire made from yttrium barium copper oxide. The generator produces a voltage of 2.5 volts when the coil is spun at 1500 revolutions per minute. According to one of the developers, Neil Alford of ICI Advanced Materials in Runcorn, a great deal of work needs to be carried out before high-temperature superconductors can be used to generate electricity on a commercial basis. The problem at present is that high-temperature superconductors can only carry relatively small amounts of current. If researchers succeed in raising the current carrying capacity of these materials, they can be used to make generating power far more efficient,