Cooling performance of high thermal conduction plastics on conduction cooled Bi2223 tapes

摘要

Dyneema fiber has a high thermal conduction property. Using the property, we applied a Dyneema fiber reinforced plastic (DFRP) as a heat drain material for a conduction-cooled magnet. In the experiments, the DFRP was contacted on a surface of HTS tape, and a short-time over current exceeding its critical current was applied to the tape. The heat drain effect was measured from a voltage of the tape and a thermocouple. The experimental results showed that the effects depended on the fiber directions in the plastic. In case that the fibers in the plastic contacted perpendicular to the tape's face, the effect was good. When the DFRP is used as the heat-drain material, we should pay attention to the fiber directions in the DFRP.