| Titre : | Attempt of integration of a small commercial ammonia-water absorption refrigerator with a solar concentrator : Experience and results (2012) |
| 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 |
| Auteurs : | A. Busso, Auteur ; J. Franco, Auteur ; N. Sogari, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 34 N° 8, Décembre 2011) |
| Article en page(s) : | pp. 1760–1775 |
| Note générale : | Génie mécanique |
| Langues : | Anglais |
| Tags : | 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 |
