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Thermodynamic optimization of conduction-cooled high-temperature superconductor current leads.

Author(s) : CHANG H. M., SCIVER S. W. van

Type of article: Article

Summary

The current lead is a series combination of a normal metal conductor at the warmer part and a high temperature superconducting at the colder part, and is cooled by a contact with distributed or staged refrigerators instead of boil-off helium gas. An analytical method is developed to derive a mathematical expression for the required refrigerator power. As results of the study, the absolute minimum in the refrigerator power per unit current is presented as a thermodynamic limit and the leads cooled by a two-stage refrigerator are theoretically optimized. Some aspects in practical design are also discussed with a new and useful graphical method.

Details

  • Original title: Thermodynamic optimization of conduction-cooled high-temperature superconductor current leads.
  • Record ID : 1999-3351
  • Languages: English
  • Source: Cryogenics - vol. 38 - n. 7
  • Publication date: 1998/07

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