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Development of a Stirling Cryocooler Using Hydrodynamic Gas Bearings
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English
Abstract
A double stage Stirling cryocooler for long life space borne operation is under development at CEA/SBT. The cooler has been designed to provide simultaneously cooling capacities of 1 Watt at 50 K and 5 Watts at 190 K, with maximum efficiency.
An original technology using hydrodynamic gas bearings and clearance seals for contactless operation has been developed and successfully assessed.
A twin piston pressure oscillator and a two stage cold expander both using hydrodynamic gas bearings and clearance seals have been designed and fabricated. The performance of the oscillator have been reported elsewhere and are summarised in this paper.
The cold finger uses a linear motor and a magnetic spring is inserted between both bearings for resonant operation. Linear motor performance, magnetic spring stiffness and resonant frequency experiments have been carried out.
Preliminary pneumatic and thermal tests of the overall system are in progress.
This work is undertaken in collaboration with AEROSPATIALE and L'AIR LIQUIDE.
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Citation
Duband, L., Ravex, A., and Rolland, P., "Development of a Stirling Cryocooler Using Hydrodynamic Gas Bearings," SAE Technical Paper 941528, 1994, https://doi.org/10.4271/941528.Also In
References
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- Werret S. T. Peskett G.D. Davey G. Bradshaw T. W. Delderfield J. “Development of a small Stirling cycle cooler for spaceflight applications” Adv. Cryog. Eng. 31 791 1986
- Claudet G. Duband L. Ravex A. Rolland P. “Development of cryocoolers for space applications using hydrodynamic gas bearings” Proc. 4th European Symp. on Space Environmental and Control Systems Florence (Italy) Oct. 1991 ESA SP-324 Dec. 1991
- Stacy W. D. “Diaphragm Stirling cryocooler developments” Cryogenics 32 138 1992
- Ravex A. Duband L. Rolland P. “Development progress of a long life twin piston pressure oscillator” CEC 93 Albuquerque - USA Adv. Cryog. Eng.