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A removable temperature sensors holder for cryogenic Rayleigh-Bénard convection cell.
Number: 0047
Author(s) : HANZELKA P., VLCEK I., URBAN P.
Summary
A removable holder carrying a set of miniature temperature sensors inside our Rayleigh-Bénard convection cylindrical cell has been developed. The sensors should not disturb the temperature and velocity fields of the buoyancy-driven turbulent flow of our working fluid - cryogenic helium gas (~ 5 K). The cell, 300 mm both in diameter and height, must withstand the overpressure up to 2.5 bar, which is why all its parts are welded together. The holder consists of a pair of identical feedthroughs (each with 6 glass-sealed pins), constantan wires (0.1 mm), Be bronze springs and insulating elements and enables installing up to 6 sensors simultaneously, with the option to replace the damaged ones. We already used two such holders and obtained a map of local temperature and its fluctuations in 12 positions inside the cell.
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Details
- Original title: A removable temperature sensors holder for cryogenic Rayleigh-Bénard convection cell.
- Record ID : 30029033
- Languages: English
- Source: Cryogenics 2021 online. Proceedings of the 16th IIR International Conference, October 5-7, 2021.
- Publication date: 2021/10/05
- DOI: http://dx.doi.org/10.18462/iir.cryo.2021.0047
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Indexing
- Themes: Small-scale cryogenic applications, cryocoolers
- Keywords: Cryogenics; Rayleigh; Convection; Cell; Vacuum; Pressure; Design; Expérimentation
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