Attempt of integration of a small commercial ammonia-water absorption refrigerator with a solar concentrator / A. Busso in International journal of refrigeration, Vol. 34 N° 8 (Décembre 2011)  

Public ISBD [article]  inInternational journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1760–1775 Titre : Attempt of integration of a small commercial ammonia-water absorption refrigerator with a solar concentrator : Experience and results Titre original : Tentative d'intégration d'un réfrigérateur commercial à absorption à ammoniac / eau de petite taille et d'un capteur solaire: expérience acquise et résultats Type de document : texte imprimé Auteurs : A. Busso, Auteur ; J. Franco, Auteur ; N. Sogari, Auteur Année de publication : 2012 Article en page(s) : pp. 1760–1775 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Ammonia Absorption system Solar refrigeration concentration Thermodynamic property Résumé : The integration of a small commercial ammonia-water absorption refrigerator with a solar concentrator as heat source was analyzed theoretically and experimentally. Operation parameters of the fridge were determined by parametric fitting experimental data using a thermodynamic model of the cycle leading to a working pressure of 25 bar, weak and strong solution concentrations of 15% and 30% respectively and a COP of ∼0.18. As sold, the fridge can operate with a reduction in the electric power supply of up to 40%. Results showed that the Parabolic Concentrator (PC) used can deliver temperatures above 200 °C for almost 6 h with an average useful power delivery and efficiency of 530 W and 26% respectively. During laboratory test runs it was possible to hold the refrigeration cycle running in a very unstable regime despite the inappropriate heat distribution in the generator unit due to the lower temperature heat source used (220 °C). However, outdoor testing with the sun as energy source proved unsuccessful due to the higher heat losses that occur at the pipes connecting the PC with the fridge. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001770 [article] Attempt of integration of a small commercial ammonia-water absorption refrigerator with a solar concentrator = Tentative d'intégration d'un réfrigérateur commercial à absorption à ammoniac / eau de petite taille et d'un capteur solaire: expérience acquise et résultats : Experience and results [texte imprimé] / A. Busso, Auteur ; J. Franco, Auteur ; N. Sogari, Auteur . - 2012 . - pp. 1760–1775. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1760–1775 Mots-clés : Ammonia Absorption system Solar refrigeration concentration Thermodynamic property Résumé : The integration of a small commercial ammonia-water absorption refrigerator with a solar concentrator as heat source was analyzed theoretically and experimentally. Operation parameters of the fridge were determined by parametric fitting experimental data using a thermodynamic model of the cycle leading to a working pressure of 25 bar, weak and strong solution concentrations of 15% and 30% respectively and a COP of ∼0.18. As sold, the fridge can operate with a reduction in the electric power supply of up to 40%. Results showed that the Parabolic Concentrator (PC) used can deliver temperatures above 200 °C for almost 6 h with an average useful power delivery and efficiency of 530 W and 26% respectively. During laboratory test runs it was possible to hold the refrigeration cycle running in a very unstable regime despite the inappropriate heat distribution in the generator unit due to the lower temperature heat source used (220 °C). However, outdoor testing with the sun as energy source proved unsuccessful due to the higher heat losses that occur at the pipes connecting the PC with the fridge. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001770

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