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.
|Title of host publication||Proceedings of the 24th International Cryogenic Engineering Conference|
|Publication status||Published - 1 Jan 2012|
|Event||ICEC24 - 24th International Cryogenic Engineering Conference - |
Duration: 1 Jan 2012 → …
|Conference||ICEC24 - 24th International Cryogenic Engineering Conference|
|Period||1/01/12 → …|