| Titre : | Experimental study of a static system based on a magneto-thermal coupling in ferrofluids (2014) |
| Titre original : | Étude expérimentale d'une pompe statique fondée sur le couplage magnéto-thermique au sein des ferrofluides |
| Auteurs : | M. Petit, Auteur ; Avenas, Yvan, Auteur ; A. Kedous-Lebouc, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 37 N° 1, Janvier 2014) |
| Article en page(s) : | pp. 201-208 |
| Note générale : | Refrigeration |
| Langues : | Anglais |
| Tags : | 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 |
