Development of nove type of Adiabatic Demagnetization Refrigerator for space using by superfluid heat pipe

对超流热管进行了基础性研究，并对绝热退磁制冷机盐丸进行了应用试验。研究了超流体热管的几何效应、临界热输入差、热面积效应、重力效应等特性。制作了适用于ADR的超流体热管盐丸实验模型，并与以往采用铜质换热器的模型进行了比较。超流型的有效导热系数比过去的两阶模型高得多。剩下的工作是超流体热管临界热流密度的精确预测和ADR的冰箱循环试验。

The fundamental study of superfluid heat pipe and the test of application for the salt pill of Adiabatic Demagnetization Refrigerator were carried out. The characteristics of Superfluid heat pipe was investigated such as the effect of geometry, difference of critical heat input, effect of heat area, effect of gravity. And the applicable test model of salt pill with superfluid heat pipe for ADR was fabricated and compared with the past model using by copper heat exchanger. The superfluid type has much higher effective thermal conductivity than two order of the past model. The remained task is the precise prediction of critical heat flux of superfluid heat pipe and the test of fridge cycle of ADR.