A dynamic 1-D model for a reciprocating active magnetic regenerator; influence of the main working parameters / G. Tagliafico in International journal of refrigeration, Vol. 33 N° 2 (Mars 2010)  

Public ISBD [article]  inInternational journal of refrigeration > Vol. 33 N° 2 (Mars 2010) . - pp. 286-293 Titre : A dynamic 1-D model for a reciprocating active magnetic regenerator; influence of the main working parameters Titre original : Modèle dynamique unidimensionnel pour un régénérateur actif magnétique; influence des paramètres de fonctionnement principaux Type de document : texte imprimé Auteurs : G. Tagliafico, Auteur ; F. Scarpa, Auteur ; F. Canepa, Auteur Année de publication : 2011 Article en page(s) : pp. 286-293 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Magnetic refrigerator Modelling Simulation Performance Parameter Regenerator Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Active Magnetic Regeneration (AMR) is a configuration that allows magnetic refrigeration to be suitable also for room temperature applications. This work is intended to detect, by means of a 1-D numerical model, the influence on the regenerator performances of the working condition ambient temperature (TCURIE ± 20 K) and of the operating parameters fluid mass flow rate (utilization factor 0.5÷3.5) and cycle frequency (0.1÷0.6 Hz). Simulations show that, tuning the fluid mass flow rate, a gadolinium AMR (395 g, f = 0.25 Hz, ΔB = 1.7 T) can reach a maximum cooling capacity of 130 W and a 40 W cooling power over a temperature span of 30 K. A COP of 5 can also be achieved with a temperature span of 30 K and a cooling power of 35 W. Frequency has a weak influence on the AMR's COP, while the ambient temperature is crucial. The system loses the 60% of cooling capacity if the ambient temperature is 20 K away from the material Curie temperature. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700709002321 [article] A dynamic 1-D model for a reciprocating active magnetic regenerator; influence of the main working parameters = Modèle dynamique unidimensionnel pour un régénérateur actif magnétique; influence des paramètres de fonctionnement principaux [texte imprimé] / G. Tagliafico, Auteur ; F. Scarpa, Auteur ; F. Canepa, Auteur . - 2011 . - pp. 286-293. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 2 (Mars 2010) . - pp. 286-293 Mots-clés : Magnetic refrigerator Modelling Simulation Performance Parameter Regenerator Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Active Magnetic Regeneration (AMR) is a configuration that allows magnetic refrigeration to be suitable also for room temperature applications. This work is intended to detect, by means of a 1-D numerical model, the influence on the regenerator performances of the working condition ambient temperature (TCURIE ± 20 K) and of the operating parameters fluid mass flow rate (utilization factor 0.5÷3.5) and cycle frequency (0.1÷0.6 Hz). Simulations show that, tuning the fluid mass flow rate, a gadolinium AMR (395 g, f = 0.25 Hz, ΔB = 1.7 T) can reach a maximum cooling capacity of 130 W and a 40 W cooling power over a temperature span of 30 K. A COP of 5 can also be achieved with a temperature span of 30 K and a cooling power of 35 W. Frequency has a weak influence on the AMR's COP, while the ambient temperature is crucial. The system loses the 60% of cooling capacity if the ambient temperature is 20 K away from the material Curie temperature. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700709002321

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