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Flow-through boiling of isopentane in structured-porous fins / Zenghui Zhao in Journal of heat transfer, Vol. 134 N° 7 (Juillet 2012) 

Public ISBD [article]  in Journal of heat transfer > Vol. 134 N° 7 (Juillet 2012) . - 09 p. Titre : Flow-through boiling of isopentane in structured-porous fins : effects of system parameters Type de document : texte imprimé Auteurs : Zenghui Zhao, Auteur ; Richard A. Wirtz, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : heat transfer Langues : Anglais (eng) Mots-clés : flow  boiling;  nucleation;  structural  porous;  fin;  wire  mesh;  isopentane;  geothermal Index. décimale : 536 Chaleur. Thermodynamique Résumé : Metallic porous structures have proved to be effective in enhancing heat transfer due to the inherent characteristics such as high specific surface area and large pore densities. In this study, structured-porous fins were built from plain weaved copper wire mesh screens. Seven test articles were made, with pore hydraulic diameter varying from 214 µm to 48 µm. Boiling experiments were conducted with Isopentane, a highly wetting fluid, flowing through the porous fin. The tested system pressure varies from 2 bars to 5 bars, and the channel Reynolds number from 2000 to 10,000. Influences of system pressure, flow rate, and pore sizes (mesh number) on flow boiling performance were investigated. The mechanisms for the influences were discussed. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000134000007 [...] [article] Flow-through boiling of isopentane in structured-porous fins : effects of system parameters [texte imprimé] / Zenghui Zhao, Auteur ; Richard A. Wirtz, Auteur . - 2012 . - 09 p. heat transfer Langues : Anglais (eng) in Journal of heat transfer > Vol. 134 N° 7 (Juillet 2012) . - 09 p. Mots-clés : flow  boiling;  nucleation;  structural  porous;  fin;  wire  mesh;  isopentane;  geothermal Index. décimale : 536 Chaleur. Thermodynamique Résumé : Metallic porous structures have proved to be effective in enhancing heat transfer due to the inherent characteristics such as high specific surface area and large pore densities. In this study, structured-porous fins were built from plain weaved copper wire mesh screens. Seven test articles were made, with pore hydraulic diameter varying from 214 µm to 48 µm. Boiling experiments were conducted with Isopentane, a highly wetting fluid, flowing through the porous fin. The tested system pressure varies from 2 bars to 5 bars, and the channel Reynolds number from 2000 to 10,000. Influences of system pressure, flow rate, and pore sizes (mesh number) on flow boiling performance were investigated. The mechanisms for the influences were discussed. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000134000007 [...]