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Performance analysis of double stage evaporator/absorber for a large temperature difference absorption system / Chan Woo Park in International journal of refrigeration, Vol. 33 N° 3 (Mai 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 3 (Mai 2010) . - pp. 521-528 Titre : Performance analysis of double stage evaporator/absorber for a large temperature difference absorption system Titre original : Analyse de la performance d’un évaporateur/absorbeur biétagé au sein d’un systéme á absorption á grand écart de température Type de document : texte imprimé Auteurs : Chan Woo Park, Auteur ; Yong Tae Kang, Auteur Année de publication : 2010 Article en page(s) : pp. 521-528 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Absorption  system  Water-lithium  bromide  Double-stage  system  Calculation  Performance  Coefficient  of  performance  Parameter  Temperature  difference  Chilled  water Résumé : The characteristics of double stage evaporator/absorber are studied to realize a large temperature difference absorption system. In the case of the double stage evaporator/absorber with the large temperature difference of the chilled water (15 °C/7 °C), the pressure of the lower stage in the evaporator/absorber is higher than that of the upper stage. And the concentration of the absorber for the double stage is lower than that for the single stage. If the solution flow ratio decreases with a constant concentration of strong solution of 63.7%, COP increases to 1.19 in the double stage system, which is 12.0% higher than that for the conventional system. When absorber and evaporator are divided by the same ratio, the optimum value of UAR for COP improvement is found to be 0.65.When absorber and evaporator are divided by different ratios, the optimum values of UARE and UARA are (0.6, 0.7). DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S014070070900231X [article] Performance analysis of double stage evaporator/absorber for a large temperature difference absorption system = Analyse de la performance d’un évaporateur/absorbeur biétagé au sein d’un systéme á absorption á grand écart de température [texte imprimé] / Chan Woo Park, Auteur ; Yong Tae Kang, Auteur . - 2010 . - pp. 521-528. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 3 (Mai 2010) . - pp. 521-528 Mots-clés : Absorption  system  Water-lithium  bromide  Double-stage  system  Calculation  Performance  Coefficient  of  performance  Parameter  Temperature  difference  Chilled  water Résumé : The characteristics of double stage evaporator/absorber are studied to realize a large temperature difference absorption system. In the case of the double stage evaporator/absorber with the large temperature difference of the chilled water (15 °C/7 °C), the pressure of the lower stage in the evaporator/absorber is higher than that of the upper stage. And the concentration of the absorber for the double stage is lower than that for the single stage. If the solution flow ratio decreases with a constant concentration of strong solution of 63.7%, COP increases to 1.19 in the double stage system, which is 12.0% higher than that for the conventional system. When absorber and evaporator are divided by the same ratio, the optimum value of UAR for COP improvement is found to be 0.65.When absorber and evaporator are divided by different ratios, the optimum values of UARE and UARA are (0.6, 0.7). DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S014070070900231X