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Détail de l'auteur
Auteur J. Tušek
Documents disponibles écrits par cet auteur
Affiner la rechercheElectrocaloric vs. magnetocaloric energy conversion / M. Ožbolt in International journal of refrigeration, Vol. 37 N° 1 (Janvier 2014)
[article]
in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 16-27
Titre : Electrocaloric vs. magnetocaloric energy conversion Titre original : Comparaisons des conversions d'énergie électrocalorique et magnétocalorique Type de document : texte imprimé Auteurs : M. Ožbolt, Auteur ; A. Kitanovski, Auteur ; J. Tušek, Auteur Année de publication : 2014 Article en page(s) : pp. 16-27 Note générale : refrigeration Langues : Anglais (eng) Mots-clés : Electrocaloric effect; magnetocaloric effect; magnetic refrigeration; energy conversion; refrigeration Résumé : Currently, one of the most interesting alternatives to conventional compressor refrigeration is magnetic refrigeration. However, despite its great potential, some important obstacles, relating mostly to the relatively low power density and the related high costs, must be overcome. Another alternative, which also shows great potential, is electrocaloric refrigeration. Until recently, electrocaloric materials were not so common; however, a number of different electrocaloric materials exist today. Like magnetocalorics, these can be used in the form of a regenerator in order to increase the temperature span. Based on a previously developed numerical model, we have made a comparison between electrocaloric and magnetocaloric regenerators. The results suggest that electrocaloric energy conversion represents a serious alternative, not only to compressor-based technologies, but also to magnetocalorics. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001655 [article] Electrocaloric vs. magnetocaloric energy conversion = Comparaisons des conversions d'énergie électrocalorique et magnétocalorique [texte imprimé] / M. Ožbolt, Auteur ; A. Kitanovski, Auteur ; J. Tušek, Auteur . - 2014 . - pp. 16-27.
refrigeration
Langues : Anglais (eng)
in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 16-27
Mots-clés : Electrocaloric effect; magnetocaloric effect; magnetic refrigeration; energy conversion; refrigeration Résumé : Currently, one of the most interesting alternatives to conventional compressor refrigeration is magnetic refrigeration. However, despite its great potential, some important obstacles, relating mostly to the relatively low power density and the related high costs, must be overcome. Another alternative, which also shows great potential, is electrocaloric refrigeration. Until recently, electrocaloric materials were not so common; however, a number of different electrocaloric materials exist today. Like magnetocalorics, these can be used in the form of a regenerator in order to increase the temperature span. Based on a previously developed numerical model, we have made a comparison between electrocaloric and magnetocaloric regenerators. The results suggest that electrocaloric energy conversion represents a serious alternative, not only to compressor-based technologies, but also to magnetocalorics. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001655 New thermodynamic cycles for magnetic refrigeration / A. Kitanovski in International journal of refrigeration, Vol. 37 N° 1 (Janvier 2014)
[article]
in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 28-35
Titre : New thermodynamic cycles for magnetic refrigeration Titre original : Nouveaux cycles thermodynamiques pour le froid magnétique Type de document : texte imprimé Auteurs : A. Kitanovski, Auteur ; U. Plaznik, Auteur ; J. Tušek, Auteur Année de publication : 2014 Article en page(s) : pp. 28-35 Note générale : refrigeration Langues : Anglais (eng) Mots-clés : Magnetic refrigeration; active magnetic regenerator; thermodynamic cycle; energy efficiency; heat transfe Résumé : Most of the existing prototype devices for magnetic refrigeration are based on a thermodynamic cycle with an active magnetic regenerator (AMR) that operates as a Brayton-type regenerative magnetic refrigeration cycle. However, there are several other cycles that may potentially influence not only the efficiency, but also the cost, compactness and simplicity of magnetocaloric devices. In this article we discuss the possibility of introducing new thermodynamic cycles. This is supported by information about, and a comparison of, the corresponding magnetic field sources. We present the results of numerical analyses and compare the characteristics of different thermodynamic cycles under different operating conditions and for different magnetic field intensities. Guidelines for future work on new magnetic thermodynamic cycles are presented. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001412 [article] New thermodynamic cycles for magnetic refrigeration = Nouveaux cycles thermodynamiques pour le froid magnétique [texte imprimé] / A. Kitanovski, Auteur ; U. Plaznik, Auteur ; J. Tušek, Auteur . - 2014 . - pp. 28-35.
refrigeration
Langues : Anglais (eng)
in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 28-35
Mots-clés : Magnetic refrigeration; active magnetic regenerator; thermodynamic cycle; energy efficiency; heat transfe Résumé : Most of the existing prototype devices for magnetic refrigeration are based on a thermodynamic cycle with an active magnetic regenerator (AMR) that operates as a Brayton-type regenerative magnetic refrigeration cycle. However, there are several other cycles that may potentially influence not only the efficiency, but also the cost, compactness and simplicity of magnetocaloric devices. In this article we discuss the possibility of introducing new thermodynamic cycles. This is supported by information about, and a comparison of, the corresponding magnetic field sources. We present the results of numerical analyses and compare the characteristics of different thermodynamic cycles under different operating conditions and for different magnetic field intensities. Guidelines for future work on new magnetic thermodynamic cycles are presented. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001412