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Heat Pipe Science and Technology, An International Journal

ISSN Print: 2151-7975
ISSN Online: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.v5.i1-4.90
pages 111-118

ENHANCEMENT OF TWO-PHASE BOILING BY CARBON NANOTUBE FORRESTS

Jean-Antoine Gruss
Univ. Grenoble Alpes, F-38000 Grenoble, France, CEA, LITEN, F-38054 Grenoble, France
Rémi Bertossi
DRII, IPSA, 7-9, rue Maurice Grandcoing, 94200 Ivry-sur-Seine, France
Nadia Caney
Univ. Grenoble Alpes, LEGI, F-38000 Grenoble, CNRS, LEGI, F-38000 Grenoble, France
Jean Dijon
CEA LITEN,17 rue des Martyrs 38054 GRENOBLE Cedex 9, France
Adeline Fournier
CEA LITEN,17 rue des Martyrs 38054 GRENOBLE Cedex 9, France
Philippe Marty
CEA LITEN,17 rue des Martyrs 38054 GRENOBLE Cedex 9, France; UJF-Grenoble 1 / Grenoble-INP / CNRS, LEGI UMR 5519, Grenoble, F-38041, France

ABSTRACT

Nanotubes are very thin cylindrical tubes which diameters range from 1 to 100 nm and which height can reach several micrometers. For some years, thermal studies concerning pool and convective boiling were led on heated surfaces coated with nanotubes forests. Indeed, theses surfaces were observed to be favorable to an increase of capillarity phenomena and can form numerous and very convenient nucleation sites. In this study, carbon nanotube forests of varying lengths have been implemented on a heated plane surface in order to characterize water boiling heat transfer in a dedicated test bench. Heat transfer intensification has been observed, attributed to an augmentation of active nucleation sites. This technology may be applied to various types of heat pipes, vapor chambers and thermosiphons to increase boiling heat transfer and critical heat flux.


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