Bouazaoui, K. and Dlimi, M. and Agounoun, R. and Sbai, K. and Zoubir, A. and Kadiri, I. and Rahmoune, M. and Saadani, R. (2017) Nucleate pool boiling of liquid nitrogen on a brass ribbon with different positions. International Journal of Mechanical and Mechatronics Engineering, 17 (5). pp. 101-108.

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Abstract

The nucleate boiling is a phenomenon of heat transfer which occupies an important place in the industrial sector particularly in the areas of electric power generation and refrigeration, because it enables to reach high flux densities with relatively low temperatures differences. To quantify the thermal exchanges in pool boiling, an experiment of steady and transient nucleate boiling is carried on liquid nitrogen from a brass ribbon fixed in the two vertical and horizontal positions and subjected to different heat flux densities. The initial conditions for the nucleation sites activation are carried out with a heat flux corresponding to 90 of the critical flux. In addition, the wall superheat variation was recorded and controlled. Moreover, the influence of different ribbon positions on the boiling triggering time, superheat of triggering and critical flux density has been investigated. © October 2017 IJENS.

Item Type: Article
Subjects: Engineering
Divisions: SCIENTIFIC PRODUCTION > Engineering
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:47
URI: http://eprints.umi.ac.ma/id/eprint/3241

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