Documents disponibles écrits par cet auteur

A new methodology for determination of an optimum fin shape under dehumidifying conditions / B. Kundu in International journal of refrigeration, Vol. 33 N° 6 (Septembre 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1105-1117 Titre : A new methodology for determination of an optimum fin shape under dehumidifying conditions Titre original : Nouvelle méthodologie pour la détermination de la géométrie optimale des ailettes sous des conditions de déshumidification Type de document : texte imprimé Auteurs : B. Kundu, Auteur Année de publication : 2010 Article en page(s) : pp. 1105-1117 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Heat  exchanger  Finned  tube  Deshumidification  Air  Calculation  Optimisation  Geometry  Fin Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : For the analytical solution of a wet fin equation, a relationship between humidity ratio and temperature of the saturation air is necessary. A linearity of this relationship instead of the actual one was chosen by many researchers for the ease of analysis of fins for a specified geometric fin. This aforementioned linear relation does not satisfy in actual case and it can be correlated by humidity ratio as a polynomial function with temperature. In this work, an exercise is devoted to determine the optimum fin profile for both fully and partially wet longitudinal fins with a nonlinear saturation curve. For this establishment, temperature distribution in the fin can be expressed by a class of power law. From the optimization analysis, an optimality criterion is setup individually for the fully and partially wet surface conditions. The optimum fin profile and design variables have been determined as a function of thermo-psychrometric parameters. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S014070071000071X [article] A new methodology for determination of an optimum fin shape under dehumidifying conditions = Nouvelle méthodologie pour la détermination de la géométrie optimale des ailettes sous des conditions de déshumidification [texte imprimé] / B. Kundu, Auteur . - 2010 . - pp. 1105-1117. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1105-1117 Mots-clés : Heat  exchanger  Finned  tube  Deshumidification  Air  Calculation  Optimisation  Geometry  Fin Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : For the analytical solution of a wet fin equation, a relationship between humidity ratio and temperature of the saturation air is necessary. A linearity of this relationship instead of the actual one was chosen by many researchers for the ease of analysis of fins for a specified geometric fin. This aforementioned linear relation does not satisfy in actual case and it can be correlated by humidity ratio as a polynomial function with temperature. In this work, an exercise is devoted to determine the optimum fin profile for both fully and partially wet longitudinal fins with a nonlinear saturation curve. For this establishment, temperature distribution in the fin can be expressed by a class of power law. From the optimization analysis, an optimality criterion is setup individually for the fully and partially wet surface conditions. The optimum fin profile and design variables have been determined as a function of thermo-psychrometric parameters. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S014070071000071X

Performance of a convectively heated rectangular fin with a step change in cross-sectional area and losing heat by simultaneous convection and radiation (Step fins under radiation environment) / B. Kundu in Journal of heat transfer, Vol. 132 N° 10 (Octobre 2010) 

Public ISBD [article]  in Journal of heat transfer > Vol. 132 N° 10 (Octobre 2010) . - pp. [104502/1-6] Titre : Performance of a convectively heated rectangular fin with a step change in cross-sectional area and losing heat by simultaneous convection and radiation (Step fins under radiation environment) Type de document : texte imprimé Auteurs : B. Kundu, Auteur ; A. Aziz, Auteur Année de publication : 2010 Article en page(s) : pp. [104502/1-6] Note générale : Physique Langues : Anglais (eng) Mots-clés : Base  convection  Convection-radiation  Step  rectangular  fin  Temperature  dependent  thermal  conductivity Index. décimale : 536 Chaleur. Thermodynamique Résumé : A numerical procedure has been used to study the thermal performance of a step convective-radiative fin with temperature dependent thermal conductivity and convective base heating. An analytical solution has been developed for a pure convective fin with constant thermal conductivity, with its base exposed to a hot fluid. The effects of geometrical and thermophysical parameters on the temperature profiles in the fin, the fin efficiency, and the fin effectiveness are illustrated. The step fin is found to deliver a superior thermal performance compared with the uniformly thick fin. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Performance of a convectively heated rectangular fin with a step change in cross-sectional area and losing heat by simultaneous convection and radiation (Step fins under radiation environment) [texte imprimé] / B. Kundu, Auteur ; A. Aziz, Auteur . - 2010 . - pp. [104502/1-6]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 10 (Octobre 2010) . - pp. [104502/1-6] Mots-clés : Base  convection  Convection-radiation  Step  rectangular  fin  Temperature  dependent  thermal  conductivity Index. décimale : 536 Chaleur. Thermodynamique Résumé : A numerical procedure has been used to study the thermal performance of a step convective-radiative fin with temperature dependent thermal conductivity and convective base heating. An analytical solution has been developed for a pure convective fin with constant thermal conductivity, with its base exposed to a hot fluid. The effects of geometrical and thermophysical parameters on the temperature profiles in the fin, the fin efficiency, and the fin effectiveness are illustrated. The step fin is found to deliver a superior thermal performance compared with the uniformly thick fin. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]