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Investigation of dry ice blockage in an ultra-low temperature cascade refrigeration system using CO2 as a working fluid / Hiroshi Yamaguchi in International journal of refrigeration, Vol. 34 N° 2 (Mars 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 2 (Mars 2011) . - pp. 466-475 Titre : Investigation of dry ice blockage in an ultra-low temperature cascade refrigeration system using CO2 as a working fluid Titre original : Etude sur le blocage par la neige carbonique d'un système frigorifique en cascade à très basse température utilisant le CO2 comme fluide actif Type de document : texte imprimé Auteurs : Hiroshi Yamaguchi, Auteur ; Niu, Xiao-Dong, Auteur ; Kenichi Sekimoto, Auteur Année de publication : 2011 Article en page(s) : pp. 466-475 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Dry  ice  Solid-gas  flow  Ultra-low  temperature  Refrigeration  system-cascade Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Dry ice blockage in a CO2-solid–gas-flow-based ultra-low temperature cascade refrigeration system is investigated experimentally by a visualization test and a system study of the liquid CO2 blew into an expansion tube through a Throttle needle valve. The visualization test shows that dry ice sedimentation occurs in low flow velocity and the dry ice formation makes the heat transfer behavior of CO2 complicated. The sedimentation also occurs at low condensation temperature and low heating power input. Based on the present investigation, it is found that the present ultra-low temperature cascade refrigeration system is better to work at heating power input above 900 W and condensation temperature above −20 °C. At suitable operating condition, the present ultra-low temperature cascade refrigeration system has been shown the capability of achieving ultra-low temperature −62 °C continuously and stably. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002616 [article] Investigation of dry ice blockage in an ultra-low temperature cascade refrigeration system using CO2 as a working fluid = Etude sur le blocage par la neige carbonique d'un système frigorifique en cascade à très basse température utilisant le CO2 comme fluide actif [texte imprimé] / Hiroshi Yamaguchi, Auteur ; Niu, Xiao-Dong, Auteur ; Kenichi Sekimoto, Auteur . - 2011 . - pp. 466-475. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 2 (Mars 2011) . - pp. 466-475 Mots-clés : Dry  ice  Solid-gas  flow  Ultra-low  temperature  Refrigeration  system-cascade Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Dry ice blockage in a CO2-solid–gas-flow-based ultra-low temperature cascade refrigeration system is investigated experimentally by a visualization test and a system study of the liquid CO2 blew into an expansion tube through a Throttle needle valve. The visualization test shows that dry ice sedimentation occurs in low flow velocity and the dry ice formation makes the heat transfer behavior of CO2 complicated. The sedimentation also occurs at low condensation temperature and low heating power input. Based on the present investigation, it is found that the present ultra-low temperature cascade refrigeration system is better to work at heating power input above 900 W and condensation temperature above −20 °C. At suitable operating condition, the present ultra-low temperature cascade refrigeration system has been shown the capability of achieving ultra-low temperature −62 °C continuously and stably. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002616