Effect of Heat Transfer on Cooling of Current Leads

  • K. S. Iyengar
  • S. W. Van Sciver
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)


Current leads supply electrical current to high-field superconducting magnets, operating at low temperatures. The heat leak flowing down the current lead must be intercepted and extracted. In the present work, we consider different methods of intercepting this heat, along with the refrigeration power required for each method. The cooling methods studied include envelope cooling, wherein the coolant flows parallel to the lead, and helical coil cooling, in which, a coolant channel is wrapped around the lead.


Current Lead Helical Coil Heat Leak National High Magnetic Field Laboratory Ohmic Heat 
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    G. J. Van Wylen and R.E. Sonntag. “Fundamentals of Classical Thermodynamics”, John Wiley & Sons, Inc., USA (1973).Google Scholar
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    K. Iyengar and S. W. Van Sciver, “Advances in Cryogenic Engineering”, Vol. 41 B, New York, 1996.Google Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • K. S. Iyengar
    • 1
  • S. W. Van Sciver
    • 1
  1. 1.FAMU/FSUCollege of Engineering & National High Magnetic Field LaboratoryTallahasseeUSA

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