Document IIF
Étude expérimentale sur un absorbeur à tubes horizontaux et film tombant à eau-bromure de lithium.
Experimental investigation on a horizontal-tube falling film absorber with water-lithium bromide.
Numéro : pap. n. TP-083
Auteurs : MARTINEZ A., EPELDE M., SAIZ S., et al.
Résumé
The absorber is the most important component in absorption cooling systems and its performance has a great influence on overall efficiency. Falling film configuration is suitable for water-lithium bromide absorbers due to its associated low pressure drop and its great potential for removing large amounts of absorption heat. Experimental study of the absorption process in a horizontal 19.05 mm-tube falling film absorber with water-lithium-bromide, has been carried out at operating conditions concerning absorption chillers. The absorber is made up of twelve horizontal copper smooth tubes forming one column. A sensitivity study of the solution mass-flow rate on the absorber efficiency parameters is presented. The absorber efficiency parameters considered are: the absorption mass flux, the solution side heat-transfer coefficient, the absorber thermal load, and the sub-cooling of the solution leaving the absorber. Moreover, the moving-window approach is employed for identifying steady-state regions from the recorded data. Results show that both mass absorption flux and absorber thermal load increase with solution mass-flow rate. The increase of the solution mass-flow rate significantly improves the tubes wetability, increasing heat and mass transfer rates. The degree of subcooling of the solution leaving the absorber ranges between 9 and 13 K, which means that the absorber is somewhat oversized.
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Détails
- Titre original : Experimental investigation on a horizontal-tube falling film absorber with water-lithium bromide.
- Identifiant de la fiche : 30008310
- Langues : Anglais
- Source : 4th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
- Date d'édition : 17/06/2013
Liens
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Indexation
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Steady-state and dynamic simulation of horizont...
- Auteurs : HACKNER M., STEPHAN K., WEIMER T.
- Date : 24/09/2002
- Langues : Anglais
- Source : Proceedings of the International Sorption Heat Pump Conference.
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ABSORPTION IN FALLING WATER-LITHIUM BROMIDE FIL...
- Auteurs : COSENZA F., VLIET G. C.
- Date : 1990
- Langues : Anglais
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Experimental study of falling film absorption h...
- Auteurs : TAKAHASHI H., KOYAMA S.
- Date : 21/08/2007
- Langues : Anglais
- Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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Heat and mass transfer studies in a horizontal ...
- Auteurs : PISE A. T., DEVOTTA S., KANT K.
- Date : 17/08/2003
- Langues : Anglais
- Source : 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
- Formats : PDF
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Optimal design of compact horizontal tube LiBr/...
- Auteurs : JEONG S., GARIMELLA S.
- Date : 01/2005
- Langues : Anglais
- Source : HVAC&R Research - vol. 11 - n. 1
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