Cooled by nitrogen vapors current lead
Annotation
The design of a current lead for the superconducting limiter of emergency currents is considered. Application of high-temperature superconductors allows using liquid nitrogen for cooling of a superconductor and current leads. The choice of aluminum as a material of a current-carrying element of a current lead is reasonable. The optimum ratio of cross sectional area to current lead length providing the minimum heat gain to the refrigerating medium are found. The settlement analysis of thermal processes in a current lead is made. High efficiency of using the departing vapors cold in the considered design of a current lead is shown.
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