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Optimisation of a desiccant cooling system design with indirect evaporative cooler / M. Goldsworthy in International journal of refrigeration, Vol. 34 N° 1 (Janvier 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 148-158 Titre : Optimisation of a desiccant cooling system design with indirect evaporative cooler Titre original : Optimisation de la conception d'un système de refroidissement à déshydratant à refroidissement évaporatif indirect Type de document : texte imprimé Auteurs : M. Goldsworthy, Auteur ; S. White, Auteur Année de publication : 2011 Article en page(s) : pp. 148-158 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Air-conditioning  Desiccant  system  Desiccant  wheel  Optimisation  Performance Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Solar desiccant-based air-conditioning has the potential to significantly reduce cost and/or greenhouse gas emissions associated with cooling of buildings. Parasitic energy consumption for the operation of supply fans has been identified as a major hindrance to achieving these savings. The cooling performance is governed by the trade-off between supplying larger flow-rates of cool air or lower flow-rates of cold air. The performance of a combined solid desiccant-indirect evaporative cooler system is analysed by solving the heat and mass transfer equations for both components simultaneously. Focus is placed on varying the desiccant wheel supply/regeneration and indirect cooler secondary/primary air-flow ratios. Results show that for an ambient reference condition, and 70 °C regeneration temperature, a supply/regeneration flow ratio of 0.67 and an indirect cooler secondary/primary flow ratio of 0.3 gives the best performance with COPe > 20. The proposed cooling system thus has potential to achieve substantial energy and greenhouse gas emission savings. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001519 [article] Optimisation of a desiccant cooling system design with indirect evaporative cooler = Optimisation de la conception d'un système de refroidissement à déshydratant à refroidissement évaporatif indirect [texte imprimé] / M. Goldsworthy, Auteur ; S. White, Auteur . - 2011 . - pp. 148-158. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 148-158 Mots-clés : Air-conditioning  Desiccant  system  Desiccant  wheel  Optimisation  Performance Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Solar desiccant-based air-conditioning has the potential to significantly reduce cost and/or greenhouse gas emissions associated with cooling of buildings. Parasitic energy consumption for the operation of supply fans has been identified as a major hindrance to achieving these savings. The cooling performance is governed by the trade-off between supplying larger flow-rates of cool air or lower flow-rates of cold air. The performance of a combined solid desiccant-indirect evaporative cooler system is analysed by solving the heat and mass transfer equations for both components simultaneously. Focus is placed on varying the desiccant wheel supply/regeneration and indirect cooler secondary/primary air-flow ratios. Results show that for an ambient reference condition, and 70 °C regeneration temperature, a supply/regeneration flow ratio of 0.67 and an indirect cooler secondary/primary flow ratio of 0.3 gives the best performance with COPe > 20. The proposed cooling system thus has potential to achieve substantial energy and greenhouse gas emission savings. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001519