Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1530599 | Materials Science and Engineering: B | 2008 | 4 Pages |
Abstract
We report rotational loss measurements for a high-temperature superconducting (HTS) bearing whose cooling consists of a thermal conduction path to the cold head of a cryocooler. Losses have been measured for rotational rates up to 14,500Â rpm at different HTS temperatures. The rotational losses decrease with decreasing HTS temperature. For temperatures that can be obtained in a liquid-nitrogen thermosiphon system, at a given speed and gap, the loss of the conduction-cooled HTS bearing is not significantly higher than the loss of a nearly identical HTS bearing cooled by flowing nitrogen from the thermosiphon.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
M. Strasik, J.R. Hull, P.E. Johnson, J. Mittleider, K.E. McCrary, C.R. McIver, A.C. Day,