Boiling crisis in cryogenic fluids during unsteady heat supply

•The liquid nitrogen is boiled in impulse mode.•Analysis of experimental results returns the minimum critical heat flux.•The expression for the minimum critical heat flux is derived and validated.•The expression is studied parametrically. Boiling of cryogenic fluids is an important problem in superc...

Full description

Saved in:
Bibliographic Details
Published in:International journal of heat and mass transfer 2017-08, Vol.111, p.1107-1111
Main Authors: Balakin, B.V., Delov, M.I., Kuzmenkov, D.M., Kutsenko, K.V., Lavrukhin, A.A., Marchenko, A.S.
Format: Article
Language:English
Subjects:
Boiling crisis
Cryogenic fluid
Cryogenic fluids
Heat flux
Heat transfer
Heating
Impulse heating
Liquid nitrogen
Low temperature physics
Superconductors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•The liquid nitrogen is boiled in impulse mode.•Analysis of experimental results returns the minimum critical heat flux.•The expression for the minimum critical heat flux is derived and validated.•The expression is studied parametrically. Boiling of cryogenic fluids is an important problem in superconductor technology, which becomes emergent in case an accidental, short-term and unsteady heating impulse appears. Here the process deviates from a standard scenario, approaching the crisis at lower heating. The present paper sheds light into the matter, aiming at the theoretical determination of the minimum critical heat flux required for the crisis to occur in the impulse mode. An analytical expression for the heat flux is derived and validated with the experiments on boiling in liquid nitrogen. Finally, a sensitivity study was performed looking at the influence of pressure, heater size and type of the fluid on the process.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2017.04.101