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Heat Pipe Science and Technology, An International Journal

ISSN Печать: 2151-7975
ISSN Онлайн: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.v1.i1.70
pages 99-112

MODELING OF TRANSFER IN THE MICROREGION IN AXIALLY GROOVED HEAT PIPES. COMPARISON OF FLUID PERFORMANCES

R. Bertossi
CNRS - Institut Prime-Université de Poitiers - ENSMA UPR 3346, Département Fluides, Thermique, Combustion, 1, avenue Clément Ader BP 40109, 86961 FUTUROSCOPE CHASSENEUIL Cedex France
Vincent Ayel
Département Fluide, Thermique et Combustion, Institut Prime, CNRS-ENSMA-Université de Poitiers, UPR 33461, 86961 Futuroscope Chasseneuil Cedex, France
Cyril Romestant
CNRS - Institut Prime-Université de Poitiers - ENSMA UPR 3346, Département Fluides, Thermique, Combustion, 1, avenue Clément Ader BP 40109, 86961 FUTUROSCOPE CHASSENEUIL Cedex France; Universita di Bergamo, Dipartimento di Ingegneria Industriale, Viale Marconi 5, 24044 Dalmine, Bergamo, Italy
Yves Bertin
CNRS - Institut Prime-Université de Poitiers - ENSMA UPR 3346, Département Fluides, Thermique, Combustion, 1, avenue Clément Ader BP 40109, 86961 FUTUROSCOPE CHASSENEUIL Cedex France
Z. Lataoui
Laboratoire d'Etudes des Systémes Thermiques et Energétiques, 5019 Monastir, Tunisie

Краткое описание

Axially grooved heat pipes are the devices mainly used to dissipate the heat flow arising due to latent heat of fluid phase change at the state of saturation. Part of the heat injected at the evaporator flows through a microregion where a meniscus remains hung at the top of each groove. This paper presents a 1D steady-state model constructed to study the heat and mass transfers in this zone. It allows one to show an important result concerning the respective behavior of the meniscus in the microregion and in the macroscopic one. Then, the paper compares the performances of various metal/fluid couples relative to the flux evacuated through the microregion and contact angle. Thus, the present study completes the characterization of the microregion and will directly participate in the heat pipe design improvement.