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A Piezoelectric Cryogenic Heat Switch

机译:压电低温热开关

摘要

We have measured the thermal conductance of a mechanical heat switch actuated by a piezoelectric positioner, the PZHS (PieZo electric Heat Switch), at cryogenic temperatures. The thermal conductance of the PZHS was measured between 4 K and 10 K, and on/off conductance ratios greater than 100 were achieved when the positioner applied its maximum force of 8 N. We discuss the advantages of using this system in cryogenic applications, and estimate the ultimate performance of an optimized PZHS.
机译:我们已经测量了在低温下由压电定位器PZHS(PieZo电热开关)驱动的机械热开关的热导率。 PZHS的热导率在4 K和10 K之间测量,当定位器施加最大8 N的力时,开/关电导率达到100以上。我们讨论了在低温应用中使用该系统的优势,以及估计优化的PZHS的最终性能。

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