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Adsorption cooling system employing granular activated carbon–R134a pair for renewable energy applications / Ahmed A. Askalany 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. 1037–1044 Titre : Adsorption cooling system employing granular activated carbon–R134a pair for renewable energy applications Titre original : Système de refroidissement à adsorption utilisant le couple actif charbon actif granulé / R134a dans les applications de l'énergie renouvelable Type de document : texte imprimé Auteurs : Ahmed A. Askalany, Auteur ; Bidyut B. Saha, Auteur ; Mahmoud S. Ahmed, Auteur Année de publication : 2013 Article en page(s) : pp. 1037–1044 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Activated  carbon;  Adsorption;  Cooling;  Waste  heat  recovery Résumé : An adsorption cooling system has been designed and built employing granular activated carbon (GAC)–R134a as adsorbent–refrigerant pair. The performance of the system has been determined using a cycle simulation computer program written in Fortran. The performance of the system has been determined varying driving heat source inlet temperatures and delivered evaporator temperatures. The maximum driving heat source temperature is kept below 100 °C to utilize solar thermal energy or waste heat sources. The results showed good agreement between the theoretical and experimental data. The maximum theoretical coefficient of performance (COP) is obtained as 0.35. The experimental specific cooling energy (SCE) is reached up to 70 kJ kg−1 whereas the maximum theoretical SCE of the system is 83 kJ kg−1. The pressurized-bed adsorption cooling system can effectively utilize low grade waste heat of temperature below 100 °C. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003088 [article] Adsorption cooling system employing granular activated carbon–R134a pair for renewable energy applications = Système de refroidissement à adsorption utilisant le couple actif charbon actif granulé / R134a dans les applications de l'énergie renouvelable [texte imprimé] / Ahmed A. Askalany, Auteur ; Bidyut B. Saha, Auteur ; Mahmoud S. Ahmed, Auteur . - 2013 . - pp. 1037–1044. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 1037–1044 Mots-clés : Activated  carbon;  Adsorption;  Cooling;  Waste  heat  recovery Résumé : An adsorption cooling system has been designed and built employing granular activated carbon (GAC)–R134a as adsorbent–refrigerant pair. The performance of the system has been determined using a cycle simulation computer program written in Fortran. The performance of the system has been determined varying driving heat source inlet temperatures and delivered evaporator temperatures. The maximum driving heat source temperature is kept below 100 °C to utilize solar thermal energy or waste heat sources. The results showed good agreement between the theoretical and experimental data. The maximum theoretical coefficient of performance (COP) is obtained as 0.35. The experimental specific cooling energy (SCE) is reached up to 70 kJ kg−1 whereas the maximum theoretical SCE of the system is 83 kJ kg−1. The pressurized-bed adsorption cooling system can effectively utilize low grade waste heat of temperature below 100 °C. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003088

Experimental study on adsorption kinetics of activated carbon/R134a and activated carbon/R507A pairs / Khairul Habib in International journal of refrigeration, Vol. 33 N° 4 (Juin 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 706-713 Titre : Experimental study on adsorption kinetics of activated carbon/R134a and activated carbon/R507A pairs Titre original : Etude expérimentale sur la cinétique d'adsorption des couples actifs charbon actif/R134a et charbon actif/R507A Type de document : texte imprimé Auteurs : Khairul Habib, Auteur ; Bidyut B. Saha, Auteur ; Kazi A. Rahman, Auteur Année de publication : 2010 Article en page(s) : pp. 706-713 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Adsorption  system  Activated  carbon  R134a  R507A  Experiment  Adsorption Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The objective of this article is to evaluate adsorption kinetics of R134a and R507A on pitch based activated carbon experimentally by a constant volume variable pressure method at different adsorption temperatures ranging from 20 to 60 °C. These data are useful for the design of adsorption cooling and refrigeration systems and are unavailable in the literature. Data obtained from the kinetic studies were analyzed with various kinetic models and the Fickian diffusion model is found to be the most suitable overall. Guided by the experimental measurements, the surface diffusion is also estimated and is found that it follows the classical Arrhenius law within the experimental range. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000216 [article] Experimental study on adsorption kinetics of activated carbon/R134a and activated carbon/R507A pairs = Etude expérimentale sur la cinétique d'adsorption des couples actifs charbon actif/R134a et charbon actif/R507A [texte imprimé] / Khairul Habib, Auteur ; Bidyut B. Saha, Auteur ; Kazi A. Rahman, Auteur . - 2010 . - pp. 706-713. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 706-713 Mots-clés : Adsorption  system  Activated  carbon  R134a  R507A  Experiment  Adsorption Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The objective of this article is to evaluate adsorption kinetics of R134a and R507A on pitch based activated carbon experimentally by a constant volume variable pressure method at different adsorption temperatures ranging from 20 to 60 °C. These data are useful for the design of adsorption cooling and refrigeration systems and are unavailable in the literature. Data obtained from the kinetic studies were analyzed with various kinetic models and the Fickian diffusion model is found to be the most suitable overall. Guided by the experimental measurements, the surface diffusion is also estimated and is found that it follows the classical Arrhenius law within the experimental range. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000216