Heat switch technology for cryogenic thermal management

[摘要] Systematic review is given of development of novel heat switches at cryogenic temperatures that alternatively provide high thermal connection or ideal thermal isolation to the cold mass. These cryogenic heat switches are widely applied in a variety of unique superconducting systems and critical space applications. The following types of heat switch devices are discussed: 1) magnetic levitation suspension, 2) shape memory alloys, 3) differential thermal expansion, 4) helium or hydrogen gap-gap, 5) superconducting, 6) piezoelectric, 7) cryogenic diode, 8) magneto-resistive, and 9) mechanical demountable connections. Advantages and limitations of different cryogenic heat switches are examined along with the outlook for future thermal management solutions in materials and cryogenic designs.

[发布机构] 1514 Southfork Drive, Keller; TX; 76248, United States^1;LeTourneau University, Longview; TX; 75607, United States^2;NASA Kennedy Space Center, Cryogenics Test Laboratory, KSC, FL; 32899, United States^3

[效力级别] 物理学 [学科分类] 材料科学（综合）

[关键词] Cold mass;Cryogenic temperatures;Differential thermal expansion;Heat switches;High thermal;Systematic Review;Thermal isolation