Documents disponibles écrits par cet auteur

Cooling characteristics of regenerative magnetic refrigeration with particle-packed bed / Tsuyoshi Kawanami in Journal of heat transfer, Vol. 133 N° 6 (Juin 2011) 

Public ISBD [article]  in Journal of heat transfer > Vol. 133 N° 6 (Juin 2011) . - pp. [060903/1-8] Titre : Cooling characteristics of regenerative magnetic refrigeration with particle-packed bed Type de document : texte imprimé Auteurs : Tsuyoshi Kawanami, Auteur ; Shigeki Hirano, Auteur ; Masahiro Ikenaga, Auteur Année de publication : 2011 Article en page(s) : pp. [060903/1-8] Note générale : Physique Langues : Anglais (eng) Mots-clés : Magnetic  refrigeration  Magnetocaloric  effect  Heat  pump  Regenerative  cycle Index. décimale : 536 Chaleur. Thermodynamique Résumé : The aim of our study was to elucidate the fundamental cooling characteristics and to improve the cooling characteristics of a room-temperature magnetic refrigerator operated under an active magnetic regenerator (AMR) cycle. The AMR refrigeration cycle, which includes a thermal storage process and a regeneration process, is used to realize a practical magnetic refrigerator operating near room-temperature. The basic components of the target AMR system are a magnetic circuit, test section, fluid-displacing device, and associated instrumentation. Spherical gadolinium particles are packed in the test section as the magnetic working substance, and air and water are used as heat transfer fluids. The cooling characteristics of the target AMR system under various operating conditions are investigated. The results show that the AMR cycle is very effective in improving the cooling performance of the room-temperature magnetic refrigerator. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Cooling characteristics of regenerative magnetic refrigeration with particle-packed bed [texte imprimé] / Tsuyoshi Kawanami, Auteur ; Shigeki Hirano, Auteur ; Masahiro Ikenaga, Auteur . - 2011 . - pp. [060903/1-8]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 6 (Juin 2011) . - pp. [060903/1-8] Mots-clés : Magnetic  refrigeration  Magnetocaloric  effect  Heat  pump  Regenerative  cycle Index. décimale : 536 Chaleur. Thermodynamique Résumé : The aim of our study was to elucidate the fundamental cooling characteristics and to improve the cooling characteristics of a room-temperature magnetic refrigerator operated under an active magnetic regenerator (AMR) cycle. The AMR refrigeration cycle, which includes a thermal storage process and a regeneration process, is used to realize a practical magnetic refrigerator operating near room-temperature. The basic components of the target AMR system are a magnetic circuit, test section, fluid-displacing device, and associated instrumentation. Spherical gadolinium particles are packed in the test section as the magnetic working substance, and air and water are used as heat transfer fluids. The cooling characteristics of the target AMR system under various operating conditions are investigated. The results show that the AMR cycle is very effective in improving the cooling performance of the room-temperature magnetic refrigerator. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]

Ice slurry generator using freezing-point depression by pressurization – Case of low-concentration NaCl aqueous solution / K. Fumoto in International journal of refrigeration, Vol. 36 N° 3 (Mai 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 795–800 Titre : Ice slurry generator using freezing-point depression by pressurization – Case of low-concentration NaCl aqueous solution Titre original : Générateur de coulis de glace faisant appel à l'abaissement du point de congélation par pressurisation – le cas d'une solution aqueuse à faible concentration de NaCl Type de document : texte imprimé Auteurs : K. Fumoto, Auteur ; T. Sato, Auteur ; Tsuyoshi Kawanami, Auteur Année de publication : 2013 Article en page(s) : pp. 795–800 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Ice  slurry;  Freezing-point  depression;  Pressurization;  Sodium  chloride;  Aqueous  solution;  Supercooled  state;  Solidification Résumé : Ice slurry, which is a mixture of fine ice crystals and liquid water, is utilized in ice storage systems owing to its good flowability and large latent heat of fusion. In the present study, a method was developed to generate ice slurry without the deposition of an ice layer on a cooled surface. This method is based on freezing-point depression of the aqueous solution, which is maintained under highpressure conditions. To control the timing for solidification and to generate ice slurry, we investigated the relationships among the pressure, temperature, and concentration of the aqueous solutions. We developed an ice slurry generator based on the new method that controls the pressure and temperature of the aqueous solution. Experimental results showed that the characteristics of the ice slurry generation were closely related to the pressure and initial stage temperature of the test fluid. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713000029 [article] Ice slurry generator using freezing-point depression by pressurization – Case of low-concentration NaCl aqueous solution = Générateur de coulis de glace faisant appel à l'abaissement du point de congélation par pressurisation – le cas d'une solution aqueuse à faible concentration de NaCl [texte imprimé] / K. Fumoto, Auteur ; T. Sato, Auteur ; Tsuyoshi Kawanami, Auteur . - 2013 . - pp. 795–800. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 795–800 Mots-clés : Ice  slurry;  Freezing-point  depression;  Pressurization;  Sodium  chloride;  Aqueous  solution;  Supercooled  state;  Solidification Résumé : Ice slurry, which is a mixture of fine ice crystals and liquid water, is utilized in ice storage systems owing to its good flowability and large latent heat of fusion. In the present study, a method was developed to generate ice slurry without the deposition of an ice layer on a cooled surface. This method is based on freezing-point depression of the aqueous solution, which is maintained under highpressure conditions. To control the timing for solidification and to generate ice slurry, we investigated the relationships among the pressure, temperature, and concentration of the aqueous solutions. We developed an ice slurry generator based on the new method that controls the pressure and temperature of the aqueous solution. Experimental results showed that the characteristics of the ice slurry generation were closely related to the pressure and initial stage temperature of the test fluid. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713000029