Abstract: The relative theory of the safety and efficiency as well as experiment are presented for the high-rated current lead design. The experiment results indicate the safety property is associated to current density of the resistive heat exchanger (HEX) and temperature margin of the HTS module. The HEX cooling mass flow rate depends on the HEX efficiency, which relates to heat transfer area and coefficient etc.

Key words: Current lead, Resistive heat exchanger, High temperature superconductor, Safety, Heat exchanger efficiency

摘要： 介绍了高温超导(HTS)大电流引线设计的安全性与效率的相关理论以及实验研究。实验结果表明：安全性与阻性换热器(HEX)的电流密度和HTS组件的温度裕度相关，换热器的效率涉及冷却气流的流量、它与换热面积、传热系数、铜材RRR值和换热器的优化长度等相关。

关键词: 电流引线, 阻性换热器, 高温超导, 安全性, 换热器效率