An active convective 4He heat switch

May, Andrew J. and Azzoni, S. and Melhuish, S. and Piccirillo, L. and Seal, D. and Sweetnam, T. and Winnicki, J. (2022) An active convective 4He heat switch. Cryogenics, 128. ISSN 0011-2275

Full text not available from this repository.


The design and experimental demonstration are reported of an active convective heat switch suitable for use at cryogenic temperatures. The switch is mechanically simple, relatively inexpensive, and requires no moving parts, instead being operated entirely using heaters. The working gas used is 4He in a closed cycle and, as such, the switch requires no external gas connections. Closed conductances on the order of 50 mW/K have been demonstrated with residual open conductances on the order of 0.4 mW/K. Novel modelling is presented which shows excellent agreement with the experimental data and significant improvement over existing models. © 2022 The Author(s)

Item Type:
Journal Article
Journal or Publication Title:
Uncontrolled Keywords:
ID Code:
Deposited By:
Deposited On:
04 Nov 2022 14:20
Last Modified:
21 Sep 2023 03:21