A High Reliability Gas-Driven Helium Cryogenic Centrifugal Compressor
A helium cryogenic compressor was developed and tested in real conditions in 1996. The achieved objective was to compress 0.018 kg/s Helium at 4 K @ 1000 Pa (10 mbar) up to 3000 Pa (30 mbar). This project was an opportunity to develop and test an interesting new concept in view of future needs. The main features of this new specific technology are described. Particular attention is paid to the gas bearing supported rotor and to the pneumatic driver. Trade off between existing technologies and the present work are presented with special stress on the bearing system and the driver. The advantages are discussed, essentially focused on life time and high reliability without maintenance as well as non pollution characteristic. Practical operational modes are also described together with the experimental performances of the compressor. The article concludes with a brief outlook of future work.
KeywordsHigh Rotational Speed Centrifugal Compression Inlet Pipe Heat Leak Active Magnetic Bearing
Unable to display preview. Download preview PDF.
- 1.Gistau and G. Claudet, The Tore Supra 300 W — 1.75 K refrigerator, in: «Advances in Cryogenic Engineering» Vol 31, Plenum, New York (1985), p.607.Google Scholar
- 2.Gistau, High power refrigeration at temperatures around 2 K, in: «ICEC16/ICMC proceedings» Part 1, Elsevier Science, Oxford (1996), p. 189.Google Scholar
- 3.Parish, G.M. Gistau, C. Hood, K. Kreinbrink and W. Appleton, Design of a large 2.0 K refrigerator for CEBAK, in: «Supercollider III», Plenum, New York (1991).Google Scholar
- 4.The LHC Study Group, The Large Hadron Collider, Conceptual Design, CERN Report AC/95–05(LHC) (1995).Google Scholar
- 5.Book: Cryogénie, Ses applications à la Supraconductivité, by Institut International du Froid, Paris, France. ISBN 2 903 633 770Google Scholar
- 6.B.S. Bevins, W.C. Chronis and M.S. Keesee, Automatic pumpdown of the 2 K cold compressors for the CEBAK helium liquefier, in: «Advances in Cryogeninc Engineering» Vol 41A, Plenum, New York (1995), p. 663.Google Scholar