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Measurement of absorption rates in horizontal-tube falling-film ammonia-water absorbers / Sangsoo Lee 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. 613–632 Titre : Measurement of absorption rates in horizontal-tube falling-film ammonia-water absorbers Titre original : Mesures des taux d'absorption des absorbeurs à ammoniac / eau aux tubes horizontaux à film tombant Type de document : texte imprimé Auteurs : Sangsoo Lee, Auteur ; Lalit Kumar Bohra, Auteur ; Srinivas Garimella, Auteur Année de publication : 2012 Article en page(s) : pp. 613–632 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Absorption  Falling  film  Heat  transfer  Mass  transfer  Ammonia  Water Résumé : Heat and mass transfer in a horizontal-tube falling-film ammonia-water absorber was investigated. A tube bank consisting of four columns of six 9.5 mm nominal OD, 0.292 m long tubes was installed in a shell that allowed heat and mass transfer measurements and optical access for flow visualization. This absorber was installed in a test facility consisting of all the components of a chiller, fabricated to obtain realistic operating conditions at the absorber to account for the influence of the other components in the system. Tests were conducted over desorber solution outlet concentrations of 5–40% for three nominal absorber pressures of 150, 345 and 500 kPa, for solution flow rates of 0.019–0.034 kg s−1. Measurement and analysis techniques, heat transfer rates, and solution- and vapor-side heat and mass transfer coefficients are described. Trends in heat and mass transfer coefficients are discussed, highlighting the effects of solution flow rate and concentration, and absorber pressure. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002131 [article] Measurement of absorption rates in horizontal-tube falling-film ammonia-water absorbers = Mesures des taux d'absorption des absorbeurs à ammoniac / eau aux tubes horizontaux à film tombant [texte imprimé] / Sangsoo Lee, Auteur ; Lalit Kumar Bohra, Auteur ; Srinivas Garimella, Auteur . - 2012 . - pp. 613–632. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 613–632 Mots-clés : Absorption  Falling  film  Heat  transfer  Mass  transfer  Ammonia  Water Résumé : Heat and mass transfer in a horizontal-tube falling-film ammonia-water absorber was investigated. A tube bank consisting of four columns of six 9.5 mm nominal OD, 0.292 m long tubes was installed in a shell that allowed heat and mass transfer measurements and optical access for flow visualization. This absorber was installed in a test facility consisting of all the components of a chiller, fabricated to obtain realistic operating conditions at the absorber to account for the influence of the other components in the system. Tests were conducted over desorber solution outlet concentrations of 5–40% for three nominal absorber pressures of 150, 345 and 500 kPa, for solution flow rates of 0.019–0.034 kg s−1. Measurement and analysis techniques, heat transfer rates, and solution- and vapor-side heat and mass transfer coefficients are described. Trends in heat and mass transfer coefficients are discussed, highlighting the effects of solution flow rate and concentration, and absorber pressure. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002131