ICEC29/ICMC2024

Cryogenic thermoelectric coolers with different passive branches

23 Jul 2024, 14:00

2h

Poster area

Poster Presentation (120m) ICEC 02: Cryocoolers, magnetic coolers and other coolers Tue-Po-1.2

Speaker

Hongwei Zhang (Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)

Description

Cryogenic thermoelectric coolers can be widely used in aerospace industry for satellite cooling systems. However, the commercialization of thermoelectric cooling technology has been built on the Bi2Te3 alloys, which have been aimed at room temperatures. Therefore, suitable materials for cryogenic thermoelectric coolers are needed. In this paper, four thermoelectric coolers have been fabricated from active elements (polycrystalline Bi85Sb15) and different passive elements (Bi-2212 bars, Bi-2223 tapes, high purity copper bars and EuBCO tapes). The maximal temperature drops between the hot and cold sides are measured at both room temperatures and cryogenic temperatures (80K, 100K and 120K) without a magnetic field. The results show the possibility of fabricating thermoelectric coolers for cryogenic temperatures.

Presentation materials

Tue-Po-1.2-331_Hongwei Zhang.pdf