Cooling Characteristics in Long Channels with Sub‐cooled Nitrogen

When designing a superconducting power cable, it is very important to investigate its cooling characteristics. Therefore a proportionally reduced cooling model was constructed at about 1/10 of the real‐scale cable in length and diameter, and basic data about the initial cooling characteristics, pressure drop characteristics, and cooling instability were acquired. Then, the cooling characteristics for a real‐scale cable were estimated from these basic ones.