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Experimental study of a static system based on a magneto-thermal coupling in ferrofluids / M. Petit in International journal of refrigeration, Vol. 37 N° 1 (Janvier 2014) 

Public ISBD [article]  in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 201-208 Titre : Experimental study of a static system based on a magneto-thermal coupling in ferrofluids Titre original : Étude expérimentale d'une pompe statique fondée sur le couplage magnéto-thermique au sein des ferrofluides Type de document : texte imprimé Auteurs : M. Petit, Auteur ; Avenas, Yvan, Auteur ; A. Kedous-Lebouc, Auteur Année de publication : 2014 Article en page(s) : pp. 201-208 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Low  Curie  temperature  ferrofluids;  static  pump;  magnetothermal  coupling;  power  electronics  cooling Résumé : Liquid cooling of electronic devices requires generally a mechanical pump which reduces the performance of the system and its reliability. It has already been shown that ferrofluids with low Curie temperature are able to create a liquid flow without any mechanical part. In fact a pressure gradient can be obtained when subjecting this ferrofluids to both a temperature gradient and a magnetic field. In this paper a novel experimental setup is proposed. It is thermally and magnetically instrumented to achieve a precise analysis of the local behavior of the ferrofluids. A MnZn based ferrofluid was investigated on steady and transient states. The results confirm that a hydrostatic pressure can be successfully created. The behavior of the ferrofluid is analyzed considering a homogeneous applied magnetic field or not. A pressure drop is also highlighted and discussed in terms of temperature gradient evolution and magneto-convection in the ferrofluid. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713002454 [article] Experimental study of a static system based on a magneto-thermal coupling in ferrofluids = Étude expérimentale d'une pompe statique fondée sur le couplage magnéto-thermique au sein des ferrofluides [texte imprimé] / M. Petit, Auteur ; Avenas, Yvan, Auteur ; A. Kedous-Lebouc, Auteur . - 2014 . - pp. 201-208. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 201-208 Mots-clés : Low  Curie  temperature  ferrofluids;  static  pump;  magnetothermal  coupling;  power  electronics  cooling Résumé : Liquid cooling of electronic devices requires generally a mechanical pump which reduces the performance of the system and its reliability. It has already been shown that ferrofluids with low Curie temperature are able to create a liquid flow without any mechanical part. In fact a pressure gradient can be obtained when subjecting this ferrofluids to both a temperature gradient and a magnetic field. In this paper a novel experimental setup is proposed. It is thermally and magnetically instrumented to achieve a precise analysis of the local behavior of the ferrofluids. A MnZn based ferrofluid was investigated on steady and transient states. The results confirm that a hydrostatic pressure can be successfully created. The behavior of the ferrofluid is analyzed considering a homogeneous applied magnetic field or not. A pressure drop is also highlighted and discussed in terms of temperature gradient evolution and magneto-convection in the ferrofluid. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713002454