A Cold-Moderator Refrigerator Incorporating a High-Speed Turbine Expander
A high-speed turbine expander has been built as part of a cold-moderator refrigerator for the Argonne National Laboratory (ANL). The design parameters and the operating characteristics of the turbine expander are presented along with the general requirements of the refrigerator. The refrigerated moderator is to be placed near a nuclear reactor to provide an intense beam of low-energy neutrons, and is to operate for continuous periods of up to 6 months. The anticipated scope of the low-energy neutron requirements indicated that the refrigerator had to be designed to operate in the 20° to 30°K temperature range with a 1000-W capacity. In addition, to avoid the hazards associated with liquid and gaseous hydrogen, helium gas was specified as the refrigerator fluid.
KeywordsJournal Bearing Side Pressure Argonne National Laboratory Leakage Flow Cavity Pressure
Unable to display preview. Download preview PDF.
- 1.R. C. Muhlenhaupt and T. R. Strobridge, “An Analysis of the Brayton Cycle as a Cryogenic Refrigerator,” to be published.Google Scholar
- 2.D. B. Mann, NBS Tech. Note No. 154 (1962).Google Scholar
- 3.D. B. Mann, H. Sixsmith, W. A. Wilson, and B. W. Birmingham, in: Advances in Cryogenic Engineering, Vol. 8, Plenum Press, New York (1963), p. 221.Google Scholar
- 4.M. T. Norton, “A Miniature Turbo-Expander for Cryogenic Refrigeration Systems,” Eleventh International Congress of Refrigeration, Munich, Germany (August 1963).Google Scholar
- 5.B. W. Birmingham, H. Sixsmith, and W. A. Wilson, in: Advances in Cryogenic Engineering, Vol. 7, Plenum Press, New York (1962), p. 30.Google Scholar
- 6.H. Sixsmith, “The Theory and Design of a Gas-Lubricated Bearing of High Stability,” Proceedings of First International Symposium on Gas-Lubricated Bearings, ACR-49, Office of Naval Research, Washington, D.C. (October 1959).Google Scholar
- 7.H. Sixsmith and W. A. Wilson, NBS J. Res. 68C(2):101 (April-June 1964).Google Scholar
- 8.G. B. Dubois and F. W. Ocvirk, “Analytical Derivation and Experimental Evaluation of Short-Bearing Approximation for Full Journal Bearings.” NASA Report 1157 (1953).Google Scholar