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Heat and mass transfer studies on a compact bubble absorber in R134a-DMF solution based vapour absorption refrigeration system / M. Suresh 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. 1004–1014 Titre : Heat and mass transfer studies on a compact bubble absorber in R134a-DMF solution based vapour absorption refrigeration system Titre original : Etudes sur le transfert de chaleur et de masse dans l'absorbeur à bulles au R134a/DMF d'un système frigorifique à absorption de vapeur Type de document : texte imprimé Auteurs : M. Suresh, Auteur ; A. Mani, Auteur Année de publication : 2013 Article en page(s) : pp. 1004–1014 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Absorption  system;  R134a;  Dimethyl  formamide;  Plate  heat  exchanger;  Heat  transfer;  Mass  transfer;  Correlation Résumé : Experimental investigations have been carried out to study heat and mass transfer characteristics of Tetrafluoro ethane (R134a) in Dimethyl formamide (DMF) solution in a compact bubble absorber of vapour absorption refrigeration system of 1 TR capacity. Plate heat exchangers have been used as system components. Bubble absorption principle is employed in the absorber and hot water supplies heat to the generator. Effect of operating parameters such as circulation ratio, absorber and generator temperatures on heat and mass transfer effectiveness, overall heat transfer coefficient and volumetric mass transfer coefficient are investigated. It is found that heat and mass transfer effectiveness of absorber are better at lower circulation ratios and higher generator temperatures. Experimental results are compared with those obtained from numerical model developed earlier by the authors and the agreement is generally fair. From the experimental data, a correlation has been obtained for volumetric mass transfer coefficient, using multi-linear regression analysis. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002939 [article] Heat and mass transfer studies on a compact bubble absorber in R134a-DMF solution based vapour absorption refrigeration system = Etudes sur le transfert de chaleur et de masse dans l'absorbeur à bulles au R134a/DMF d'un système frigorifique à absorption de vapeur [texte imprimé] / M. Suresh, Auteur ; A. Mani, Auteur . - 2013 . - pp. 1004–1014. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 1004–1014 Mots-clés : Absorption  system;  R134a;  Dimethyl  formamide;  Plate  heat  exchanger;  Heat  transfer;  Mass  transfer;  Correlation Résumé : Experimental investigations have been carried out to study heat and mass transfer characteristics of Tetrafluoro ethane (R134a) in Dimethyl formamide (DMF) solution in a compact bubble absorber of vapour absorption refrigeration system of 1 TR capacity. Plate heat exchangers have been used as system components. Bubble absorption principle is employed in the absorber and hot water supplies heat to the generator. Effect of operating parameters such as circulation ratio, absorber and generator temperatures on heat and mass transfer effectiveness, overall heat transfer coefficient and volumetric mass transfer coefficient are investigated. It is found that heat and mass transfer effectiveness of absorber are better at lower circulation ratios and higher generator temperatures. Experimental results are compared with those obtained from numerical model developed earlier by the authors and the agreement is generally fair. From the experimental data, a correlation has been obtained for volumetric mass transfer coefficient, using multi-linear regression analysis. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002939