NASA NTRS · 20140012660
A Piezoelectric Cryogenic Heat Switch
Abstract
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.
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Jahromi, Amir E., Sullivan, Dan F.. 2014-01-01. A Piezoelectric Cryogenic Heat Switch. https://ntrs.nasa.gov/citations/20140012660
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