Cryogenics, volume 65, pages 5-9

Heat transfer from Ni-W tapes in liquid nitrogen at different orientations in the field of gravity

Balakin Boris 1
Lavrukhin A.A. 2
1
 
University College of Bergen, Bergen, Norway
3
 
Schlumberger FCS EMS Center, Abbeville, France
Publication typeJournal Article
Publication date2015-01-01
Journal: Cryogenics
Quartile SCImago
Q2
Quartile WOS
Q3
Impact factor2.1
ISSN00112275, 18792235
General Physics and Astronomy
General Materials Science
Abstract
• New experimental data on heat transfer from the surface of double-sided cooled Ni–W tapes are presented. • The dependence of heat transfer coefficient on heater orientation in the field of gravity is demonstrated. • The dependence of heat transfer coefficient for boiling regime is derived with respect to Ni–W tapes in liquid nitrogen . Ni–W tapes of the micrometric thickness are considered as the basis for the cost-effective manufacturing of coated conductors – the 2nd generation of high-temperature superconductor (HTS). Many HTS applications involve widely-available and inexpensive liquid nitrogen. The transition from superconducting to normal state may however occurs due to unexpected temperature fluctuations. In this case Ni–W tape is significantly heated by electrical current propagating through it. The amount of heat transferred from the tape to coolant is defined by heat transfer from the surface of tape to liquid nitrogen. The heat transfer, in turn, is strongly dependent on the tape orientation in the field of gravity. The present paper reports the experimental results on the heat transfer from Ni–W tape to a pool of liquid nitrogen. The heat transfer coefficients are quantified for three subsequent heat transfer regimes: natural convection of liquid nitrogen, nucleate boiling regime and film boiling. The dependence of heat transfer coefficient on inclination angle of the tape from vertical are experimentally clarified for each regime. The expression for the heat transfer coefficient at different inclination angles is derived for the case of nucleate boiling.

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Balakin B. et al. Heat transfer from Ni-W tapes in liquid nitrogen at different orientations in the field of gravity // Cryogenics. 2015. Vol. 65. pp. 5-9.
GOST all authors (up to 50) Copy
Balakin B., Delov M. I., Kutsenko K., Lavrukhin A., Zhdaneev O. Heat transfer from Ni-W tapes in liquid nitrogen at different orientations in the field of gravity // Cryogenics. 2015. Vol. 65. pp. 5-9.
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RIS Copy
TY - JOUR
DO - 10.1016/j.cryogenics.2014.11.003
UR - https://doi.org/10.1016%2Fj.cryogenics.2014.11.003
TI - Heat transfer from Ni-W tapes in liquid nitrogen at different orientations in the field of gravity
T2 - Cryogenics
AU - Kutsenko, K.V.
AU - Lavrukhin, A.A.
AU - Balakin, Boris
AU - Delov, Maksim I
AU - Zhdaneev, Oleg
PY - 2015
DA - 2015/01/01 00:00:00
PB - Elsevier
SP - 5-9
VL - 65
SN - 0011-2275
SN - 1879-2235
ER -
BibTex
Cite this
BibTex Copy
@article{2015_Balakin
author = {K.V. Kutsenko and A.A. Lavrukhin and Boris Balakin and Maksim I Delov and Oleg Zhdaneev},
title = {Heat transfer from Ni-W tapes in liquid nitrogen at different orientations in the field of gravity},
journal = {Cryogenics},
year = {2015},
volume = {65},
publisher = {Elsevier},
month = {jan},
url = {https://doi.org/10.1016%2Fj.cryogenics.2014.11.003},
pages = {5--9},
doi = {10.1016/j.cryogenics.2014.11.003}
}
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