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Experimental testing of a lab-scale adsorption chiller using a novel selective water sorbent “silica modified by calcium nitrate” / Angelo Freni 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. 518–524 Titre : Experimental testing of a lab-scale adsorption chiller using a novel selective water sorbent “silica modified by calcium nitrate” Titre original : Essais expérimentaux sur un refroidisseur à adsorption à l'échelle du laboratoire employant un sorbant d'eau à base de gel de silice modifié à l'aide du nitrate de calcium Type de document : texte imprimé Auteurs : Angelo Freni, Auteur ; Alessio Sapienza, Auteur ; Ivan S. Glaznev, Auteur Année de publication : 2012 Article en page(s) : pp. 518–524 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Adsorption  chiller  Water  Silica  gel  Additive  Nitrate  Calcium  Evaluation  Performance Résumé : In this paper, a novel composite water sorbent “silica modified by calcium nitrate” (SWS-8L) has been tested for utilization in adsorption chillers driven by low-temperature heat. The isosteric diagram of the working pair under investigation has been calculated from experimental adsorption data measured at equilibrium. The equivalent specific heat of the sorbent as a function of the water loading was experimentally measured by a calorimetric technique. Thermodynamic cooling COP was estimated to be 0.51–0.71, with desorption temperature lower than 90 °C. Real performance was measured by testing a SWS-8L based sorbent bed in a lab-scale adsorption chiller. With this aim, SWS-8L grains were embedded inside a compact aluminium heat exchanger with high thermal efficiency. Experimental cooling COP, mass specific cooling power SCP and volumetric specific cooling power VSCP obtained are 0.18–0.31 (cycle time 10 min), 190–389 W/kg dry sorbent and 104–212 W/dm3, respectively. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001131 [article] Experimental testing of a lab-scale adsorption chiller using a novel selective water sorbent “silica modified by calcium nitrate” = Essais expérimentaux sur un refroidisseur à adsorption à l'échelle du laboratoire employant un sorbant d'eau à base de gel de silice modifié à l'aide du nitrate de calcium [texte imprimé] / Angelo Freni, Auteur ; Alessio Sapienza, Auteur ; Ivan S. Glaznev, Auteur . - 2012 . - pp. 518–524. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 518–524 Mots-clés : Adsorption  chiller  Water  Silica  gel  Additive  Nitrate  Calcium  Evaluation  Performance Résumé : In this paper, a novel composite water sorbent “silica modified by calcium nitrate” (SWS-8L) has been tested for utilization in adsorption chillers driven by low-temperature heat. The isosteric diagram of the working pair under investigation has been calculated from experimental adsorption data measured at equilibrium. The equivalent specific heat of the sorbent as a function of the water loading was experimentally measured by a calorimetric technique. Thermodynamic cooling COP was estimated to be 0.51–0.71, with desorption temperature lower than 90 °C. Real performance was measured by testing a SWS-8L based sorbent bed in a lab-scale adsorption chiller. With this aim, SWS-8L grains were embedded inside a compact aluminium heat exchanger with high thermal efficiency. Experimental cooling COP, mass specific cooling power SCP and volumetric specific cooling power VSCP obtained are 0.18–0.31 (cycle time 10 min), 190–389 W/kg dry sorbent and 104–212 W/dm3, respectively. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001131