An active convective 4He heat switch
<p>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...
| Main Authors: | , , , , , , |
|---|---|
| פורמט: | Journal article |
| שפה: | English |
| יצא לאור: |
Elsevier
2022
|
| _version_ | 1826310333669572608 |
|---|---|
| author | May, AJ Azzoni, S Melhuish, S Piccirillo, L Seal, D Sweetnam, T Winnicki, J |
| author_facet | May, AJ Azzoni, S Melhuish, S Piccirillo, L Seal, D Sweetnam, T Winnicki, J |
| author_sort | May, AJ |
| collection | OXFORD |
| description | <p>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 <4> He 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.</p> |
| first_indexed | 2024-03-07T07:48:52Z |
| format | Journal article |
| id | oxford-uuid:af65f2b7-9469-4ffc-87cf-7f42311f36e0 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:48:52Z |
| publishDate | 2022 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:af65f2b7-9469-4ffc-87cf-7f42311f36e02023-06-30T16:04:34ZAn active convective 4He heat switchJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:af65f2b7-9469-4ffc-87cf-7f42311f36e0EnglishSymplectic ElementsElsevier2022May, AJAzzoni, SMelhuish, SPiccirillo, LSeal, DSweetnam, TWinnicki, J<p>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 <4> He 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.</p> |
| spellingShingle | May, AJ Azzoni, S Melhuish, S Piccirillo, L Seal, D Sweetnam, T Winnicki, J An active convective 4He heat switch |
| title | An active convective 4He heat switch |
| title_full | An active convective 4He heat switch |
| title_fullStr | An active convective 4He heat switch |
| title_full_unstemmed | An active convective 4He heat switch |
| title_short | An active convective 4He heat switch |
| title_sort | active convective 4he heat switch |
| work_keys_str_mv | AT mayaj anactiveconvective4heheatswitch AT azzonis anactiveconvective4heheatswitch AT melhuishs anactiveconvective4heheatswitch AT piccirillol anactiveconvective4heheatswitch AT seald anactiveconvective4heheatswitch AT sweetnamt anactiveconvective4heheatswitch AT winnickij anactiveconvective4heheatswitch AT mayaj activeconvective4heheatswitch AT azzonis activeconvective4heheatswitch AT melhuishs activeconvective4heheatswitch AT piccirillol activeconvective4heheatswitch AT seald activeconvective4heheatswitch AT sweetnamt activeconvective4heheatswitch AT winnickij activeconvective4heheatswitch |