Abstract
A heat exchanger for cooling the TRISTAN final focusing superconducting quadrupole magnet was studied. This heat exchanger could produce subcooled liquid helium of 20 g/s and 0.16 MPa below 4.4 K with saturated liquid helium at 0.11 MPa. For the heat transfer of single phase flow in the heat exchanger, the calculations with the Dittus-Boelter and Kutateladze equations agreed well with the measurements. For the heat transfer during the condensation process, the Shah equation including vapor quality was applied. The calculated heat transfer energy was twice as large as the measured value and the vapor effect on the heat transfer coefficient was not as large as that calculated by the Shah equation.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
M. M. Shah, A General Correlation for Heat Transfer During Film Condensation Inside Pipe, Int. J. Heat Mass Transfer, Vol. 22, p547 (1979).
E. G. Brentari and R. V. Smith, Nucleate and film pool boiling design correlations for O2, N2, H2, and He, in: Advances in Cryogenic Engineering, Vol. 10, Plenum Press, New York (1965), p325.
K. Tsuchiya, N. Ohuchi, A. Terashima and K. Shinkai, Cryogenic system of the superconducting insertion quadrupole magnets for TRISTAN main ring, in: Advances in Cryogenic Engineering, Vol. 35, Plenum Press, New York (1990), p941.
PROPATH group, PROPATH: a program package for thermophysical property, Version 3.1 (1989).
E. Sauvage-Boutar, C. Meuris, J. Poivilliers and M. X. Francois, Observation of two-phase helium flows in a horizontal pipe, in: Advances in Cryogenic Engineering, Vol. 33, Plenum Press, New York (1988), p441.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 Plenum Press, New York
About this chapter
Cite this chapter
Ohuchi, N., Tsuchiya, K. (1996). Studies on a Heat Exchanger Producing Subcooled Liquid Helium. In: Kittel, P. (eds) Advances in Cryogenic Engineering. A Cryogenic Engineering Conference Publication, vol 41. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0373-2_29
Download citation
DOI: https://doi.org/10.1007/978-1-4613-0373-2_29
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-8022-1
Online ISBN: 978-1-4613-0373-2
eBook Packages: Springer Book Archive