[article] 
inInternational journal of refrigeration > Vol. 34 N° 5 (Août 2011) . - pp. 1197-1208

Titre :	Ammonia–water desorption heat and mass transfer in microchannel devices
Titre original :	Transfert de chaleur et de masse dans un désorbeur à ammoniac-eau à microcanaux
Type de document :	texte imprimé
Auteurs :	Matthew D. Determan, Auteur ; Srinivas Garimella, Auteur
Année de publication :	2011
Article en page(s) :	pp. 1197-1208
Note générale :	Génie Mécanique
Langues :	Anglais (eng)
Mots-clés :	Desorption Miniaturization Mass transfer Microchannel Heat pump
Index. décimale :	621.5 Energie pneumatique. Machinerie et outils. Réfrigération
Résumé :	This paper presents the results of an experimentally validated model for the prediction of local heat and mass transfer rates in a microchannel ammonia–water desorber. The desorber is an extremely compact 178 mm × 178 mm × 0.508 m tall component capable of transferring the required heat load (∼17.5 kW) for a residential heat pump system. The model predicts temperature, concentration and mass flow rate profiles through the desorber, as well as the effective wetted area of the heat transfer surface. Previous experimental and analytical research by the authors demonstrated the performance of this same microchannel geometry as an absorber. Together, these studies show that this compact geometry is suitable for all components in an absorption heat pump, which would enable the increased use of absorption technology in the small-capacity heat pump market.
DEWEY :	621.5
ISSN :	0140-7007
En ligne :	http://www.sciencedirect.com/science/article/pii/S014070071100048X

[article] Ammonia–water desorption heat and mass transfer in microchannel devices = Transfert de chaleur et de masse dans un désorbeur à ammoniac-eau à microcanaux [texte imprimé] / Matthew D. Determan, Auteur ; Srinivas Garimella, Auteur . - 2011 . - pp. 1197-1208.
Génie Mécanique
Langues : Anglais (eng)
in International journal of refrigeration > Vol. 34 N° 5 (Août 2011) . - pp. 1197-1208

Mots-clés :	Desorption Miniaturization Mass transfer Microchannel Heat pump
Index. décimale :	621.5 Energie pneumatique. Machinerie et outils. Réfrigération
Résumé :	This paper presents the results of an experimentally validated model for the prediction of local heat and mass transfer rates in a microchannel ammonia–water desorber. The desorber is an extremely compact 178 mm × 178 mm × 0.508 m tall component capable of transferring the required heat load (∼17.5 kW) for a residential heat pump system. The model predicts temperature, concentration and mass flow rate profiles through the desorber, as well as the effective wetted area of the heat transfer surface. Previous experimental and analytical research by the authors demonstrated the performance of this same microchannel geometry as an absorber. Together, these studies show that this compact geometry is suitable for all components in an absorption heat pump, which would enable the increased use of absorption technology in the small-capacity heat pump market.
DEWEY :	621.5
ISSN :	0140-7007
En ligne :	http://www.sciencedirect.com/science/article/pii/S014070071100048X