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Nucleate pool boiling of R-134a on plain and micro-finned tubes / Sérgio Pereira Rocha in International journal of refrigeration, Vol. 36 N° 2 (N° spécial) (Mars 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 2 (N° spécial) (Mars 2013) . - pp. 456–464 Titre : Nucleate pool boiling of R-134a on plain and micro-finned tubes Titre original : Ebullition libre nucléée du R-134a sur des tubes lisses et à micro-ailettes Type de document : texte imprimé Auteurs : Sérgio Pereira Rocha, Auteur ; Olivier Kannengieser, Auteur ; Elaine Maria Cardoso, Auteur Année de publication : 2013 Article en page(s) : pp. 456–464 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Nucleate  boiling;  Micro-fin;  Heat  transfer;  Flooded  evaporators Résumé : This paper presents experimental results for the nucleate pool boiling of R134-a on plain and micro-finned tubes at pressures between 6.1 bar and 12.2 bar. Local measurements of the temperature enabled us to identify the physical mechanism responsible for the enhancement of the heat transfer due to the micro-fins. The experimental heat transfer coefficients were then compared with various correlations obtained for a plain tube. The validity of the correlation furnished by Gorenflo and Kenning (2010) was tested for the micro-finned tube. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003453 [article] Nucleate pool boiling of R-134a on plain and micro-finned tubes = Ebullition libre nucléée du R-134a sur des tubes lisses et à micro-ailettes [texte imprimé] / Sérgio Pereira Rocha, Auteur ; Olivier Kannengieser, Auteur ; Elaine Maria Cardoso, Auteur . - 2013 . - pp. 456–464. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 2 (N° spécial) (Mars 2013) . - pp. 456–464 Mots-clés : Nucleate  boiling;  Micro-fin;  Heat  transfer;  Flooded  evaporators Résumé : This paper presents experimental results for the nucleate pool boiling of R134-a on plain and micro-finned tubes at pressures between 6.1 bar and 12.2 bar. Local measurements of the temperature enabled us to identify the physical mechanism responsible for the enhancement of the heat transfer due to the micro-fins. The experimental heat transfer coefficients were then compared with various correlations obtained for a plain tube. The validity of the correlation furnished by Gorenflo and Kenning (2010) was tested for the micro-finned tube. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003453