A pumped supercritical helium flow loop for heat transfer studies

✍ Scribed by D.N.H. Cairns; D.J. Brassington

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 353 KB
• Volume: 16
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(76)90003-5

✦ Synopsis

The construction and operation of a flow loop is described in which a 0.51 s-1 centrifugal pump circulates supercritical helium through a 1 m long, 18 mm id heated test section instrumented with 18 carbon resistance thermometers. Based on the heat transfer measurements obtained (published in detail elsewhere) some observations are made on deviations from the standard Dittus Boelter heat transfer correlation caused by helium's variable properties, and on possible buoyancy induced reductions in heat transfer particularly for radially inward flow in rotating machines.