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Experimental Simulation of a Cryogenic System for a Large Superconducting Rotor

  • L. Sobel
  • J. L. SmithJr.
  • F. Rumore
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 35 A)

Abstract

The high-tip speed experiment described in this study involves a cryogenic rotor designed to test an advanced cooling system for the rotor of a superconducting generator. The experiment does not include an actual superconductor field winding but does include a helium chamber typical of the winding space in an actual superconducting rotor.

Keywords

Mass Flow Rate Inlet Valve Transfer Tube Heat Leak Cryogenic System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notation

Notation

A

= conduction area

C.V.

= control volume intergral

Cp

= helium specific heat

hfg

= latent heat

h0

= centerline enthalpy

k(T)

= thermal conductivity

= helium mass flow rate

P

= pressure

Q̇

= heat input

qL

= cold end heat leak

r

= radius

s

= enthropy

T

= temperature

T1

= temperature indicated by coldest Allen-Bradley in torque tube

T2

= temperature indicated by next coldest Allen-Bradley in torque tube

u

= internal energy

= work output

x

= conduction length

Greek Symbols

ω

= rotational speed

ρ

= fluid density

ρυ

= saturated vapor density

/∂t

= time derivative

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References

  1. 1.
    K. A. Tepper, S.M. thesis, Massachusetts Institute of Technology, Cambridge, Massachusetts (1976).Google Scholar
  2. 2.
    A. Bejan, Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge, Massachusetts (1974).Google Scholar
  3. 3.
    K. A. Tepper, J. L. Smith, Jr., and F. C. Rumore, in Advances in Cryogenic Engineering, Vol. 23, Plenum Press, New York (1978), p. 118.CrossRefGoogle Scholar
  4. 4.
    D. Otten, “Demonstration of an Advanced Superconducting Generator,” ERDA Contract No. E(49–18)-2295, Task Order No. 11-IR4, Interim Report (January 1978), p. 123.Google Scholar
  5. 5.
    L. Sobel, S.M. thesis (unpublished), Massachusetts Institute of Technology, Cambridge, Massachusetts (1979).Google Scholar
  6. 6.
    R. A. Bukovich, S.M. thesis, Massachusetts Institute of Technology, Cambridge, Massachusetts (1978).Google Scholar
  7. 7.
    L. Sobel and J. L. Smith, Jr., “Analysis of Boiloff of Helium in a Centrifugal Field,” paper submitted to Cryogenics. Google Scholar
  8. 8.
    P. Thullen, Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge, Massachusetts (1969).Google Scholar

Copyright information

© Springer Science+Business Media New York 1980

Authors and Affiliations

  • L. Sobel
    • 1
  • J. L. SmithJr.
    • 1
  • F. Rumore
    • 1
  1. 1.Massachusetts Institute of TechnologyCambridgeUSA

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