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Experimental study on a combined double-way chemisorption refrigeration system / L. Xu in International journal of refrigeration, Vol. 34 N° 4 (Juin 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 4 (Juin 2011) . - pp. 914-921 Titre : Experimental study on a combined double-way chemisorption refrigeration system Titre original : Etude expérimentale sur un système frigorifique à sorption chimique utilisant deux lits adsorbants Type de document : texte imprimé Auteurs : L. Xu, Auteur ; R.Z. Wang, Auteur ; T.X. Li, Auteur Année de publication : 2011 Article en page(s) : pp. 914-921 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Sorption  Refrigeration  COP  Adsorption  Resorption Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A combined double-way chemisorption refrigeration system was described and investigated, and the experimental test unit was built, which consists of two adsorption beds: one high-temperature salt bed (HTS bed), which is filled with manganese chloride; and one low-temperature salt bed (LTS bed), which is filled with barium chloride. Moreover, the working performance of double-way chemisorption refrigeration cycle was studied. This cycle uses only one heat input to get two cold outputs, one of which comes from the evaporation heat produced by the refrigerant during the adsorption process, and another of which is from decomposition reaction heat consumed by LTS during the resorption process. The experimental results showed that the coefficient of performance (COP) and specific cooling power (SCP) were 0.703 and 225 W kg−1 respectively at the refrigeration temperature of 15 °C, regeneration temperature of 160 °C and heat sink temperature of 30 °C. Also, the relation between the average global conversion and the COP value were found and analyzed. And the choice of salts and optimum reaction time were discussed either. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711000673 [article] Experimental study on a combined double-way chemisorption refrigeration system = Etude expérimentale sur un système frigorifique à sorption chimique utilisant deux lits adsorbants [texte imprimé] / L. Xu, Auteur ; R.Z. Wang, Auteur ; T.X. Li, Auteur . - 2011 . - pp. 914-921. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 4 (Juin 2011) . - pp. 914-921 Mots-clés : Sorption  Refrigeration  COP  Adsorption  Resorption Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A combined double-way chemisorption refrigeration system was described and investigated, and the experimental test unit was built, which consists of two adsorption beds: one high-temperature salt bed (HTS bed), which is filled with manganese chloride; and one low-temperature salt bed (LTS bed), which is filled with barium chloride. Moreover, the working performance of double-way chemisorption refrigeration cycle was studied. This cycle uses only one heat input to get two cold outputs, one of which comes from the evaporation heat produced by the refrigerant during the adsorption process, and another of which is from decomposition reaction heat consumed by LTS during the resorption process. The experimental results showed that the coefficient of performance (COP) and specific cooling power (SCP) were 0.703 and 225 W kg−1 respectively at the refrigeration temperature of 15 °C, regeneration temperature of 160 °C and heat sink temperature of 30 °C. Also, the relation between the average global conversion and the COP value were found and analyzed. And the choice of salts and optimum reaction time were discussed either. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711000673

Performance analysis of a multi-mode thermochemical sorption refrigeration system for solar-powered cooling / T.X. Li in International journal of refrigeration, Vol. 35 N° 3 (Mai 2012) 

Public ISBD [article]  in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 532–542 Titre : Performance analysis of a multi-mode thermochemical sorption refrigeration system for solar-powered cooling Titre original : Analyse de la performance d’un système frigorifique thermochimique à sorption multimodal pour le refroidissement solaire Type de document : texte imprimé Auteurs : T.X. Li, Auteur ; R.Z. Wang, Auteur ; J.K. Kiplaga, Auteur Année de publication : 2012 Article en page(s) : pp. 532–542 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Solar  energy  Sorption  system  Refrigeration  Heat  recovery  Thermodynamic  cycle Résumé : A multi-mode thermochemical sorption refrigeration system is presented for solar-powered cooling. The proposed system consists of three sorption refrigeration thermodynamic cycles that can be alternately operated based on the available solar energy insolation viz: combined double-way cycle, double-effect cycle and two-stage cycle. The working performance of the different sorption refrigeration cycles were theoretically analyzed and compared. For combined double-way sorption cycle, both adsorption refrigeration and resorption refrigeration were combined to improve the cooling capacity. For double-effect sorption cycle, one internal heat recovery process was employed to enhance the energy utilization efficiency. For two-stage cycle with internal heat recovery process, a secondary reactive salt was used to lower the driving regeneration temperature. Thermodynamic analysis showed that the working modes of the proposed system can be switched according to the different driving heat source temperatures. In comparison with the conventional solar solid-gas sorption refrigeration system, the presented multi-mode system can contribute to improving the utilization efficiency of solar energy and widening the scope of application of solar thermochemical sorption refrigerator. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002738 [article] Performance analysis of a multi-mode thermochemical sorption refrigeration system for solar-powered cooling = Analyse de la performance d’un système frigorifique thermochimique à sorption multimodal pour le refroidissement solaire [texte imprimé] / T.X. Li, Auteur ; R.Z. Wang, Auteur ; J.K. Kiplaga, Auteur . - 2012 . - pp. 532–542. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 532–542 Mots-clés : Solar  energy  Sorption  system  Refrigeration  Heat  recovery  Thermodynamic  cycle Résumé : A multi-mode thermochemical sorption refrigeration system is presented for solar-powered cooling. The proposed system consists of three sorption refrigeration thermodynamic cycles that can be alternately operated based on the available solar energy insolation viz: combined double-way cycle, double-effect cycle and two-stage cycle. The working performance of the different sorption refrigeration cycles were theoretically analyzed and compared. For combined double-way sorption cycle, both adsorption refrigeration and resorption refrigeration were combined to improve the cooling capacity. For double-effect sorption cycle, one internal heat recovery process was employed to enhance the energy utilization efficiency. For two-stage cycle with internal heat recovery process, a secondary reactive salt was used to lower the driving regeneration temperature. Thermodynamic analysis showed that the working modes of the proposed system can be switched according to the different driving heat source temperatures. In comparison with the conventional solar solid-gas sorption refrigeration system, the presented multi-mode system can contribute to improving the utilization efficiency of solar energy and widening the scope of application of solar thermochemical sorption refrigerator. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002738