Controlled actuation of a Gas-Gap heat Switch

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Gas gap heat switches owe their compactness and absence of moving parts to a small cryopump that manages the gas pressure inside the gap. The knowledge of adsorption characteristics of different activated charcoals for different gases (helium, hydrogen and nitrogen) allowed the creation of a pre-dimensioning tool to predict the switch conduction as a function of the cryopump temperature. In order to increase the conductance in the ON state, different geometries of sorption actuated GGHS were developed to operate between 3 K and 100 K. These prototypes were characterized using different exchange gases, and successfully compared with the conduction model.
Original languageUnknown
Title of host publicationProceedings of the 24th International Cryogenic Engineering Conference
Publication statusPublished - 1 Jan 2012
EventICEC24 - 24th International Cryogenic Engineering Conference -
Duration: 1 Jan 2012 → …


ConferenceICEC24 - 24th International Cryogenic Engineering Conference
Period1/01/12 → …

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