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Influence de la pression atmosphérique sur la vitesse de transfert de masse des roues déshydratantes.
Influence of the atmospheric pressure on the mass transfer rate of desiccant wheels.
Auteurs : RUIVO C. R., COSTA J. J., FIGUEREIDO A. R.
Type d'article : Article, Article de la RIF
Résumé
The performance of a desiccant wheel is evaluated by modelling a representative channel. The hypothesis of negligible resistances to heat and mass transfer in the cross-direction is assumed in the thin porous desiccant wall of the channels and the airflow is treated as a bulk flow. Parametric studies were conducted to investigate the influence of the atmospheric pressure decrease from 101,325 to 60,000 Pa (0-4217 m of altitude) on the mass transfer rate of desiccant wheels considering distinct channel lengths and different inlet airflow rates, a large range of values of the rotation speed, as well as three alternative ways to specify the inlet conditions of the regeneration and of the process airflows. A procedure to derive correlations based on the numerical results is presented for the correction factor of the mass transfer rate when a desiccant wheel is operating at non-standard atmospheric conditions. Four parametric studies were performed, the derived correlations were tested and a good agreement was found between the estimated correction factor and the correction factor calculated after the numerical results.
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Pages : pp. 707-718
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Détails
- Titre original : Influence of the atmospheric pressure on the mass transfer rate of desiccant wheels.
- Identifiant de la fiche : 2011-0269
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 3
- Date d'édition : 05/2011
Liens
Voir d'autres articles du même numéro (20)
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Indexation
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Thèmes :
Equipements d'humidification/déshumidification;
Autres équipements de conditionnement d'air;
Systèmes à absorption et adsorption;
Autres systèmes de production de froid (dessiccation, thermoélectricité, thermoacoustique...) - Mots-clés : Roue déshydratante; Régime permanent; Système à adsorption; Modélisation; Pression; Conditionnement d'air
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Open-cycle absorption and desiccant technology.
- Auteurs : GROSSMAN G.
- Date : 06/04/2011
- Langues : Anglais
- Source : Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
- Formats : PDF
Voir la fiche
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Potential study of desiccant wheel-based water ...
- Auteurs : GLÜCK C., ROLDAN BLASCO E., LENZ B., et al.
- Date : 06/04/2011
- Langues : Anglais
- Source : Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
- Formats : PDF
Voir la fiche
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Limiting heat and mass transfer mechanisms in d...
- Auteurs : GOLDSWORTHY M., WHITE S. D.
- Date : 06/04/2011
- Langues : Anglais
- Source : Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
- Formats : PDF
Voir la fiche
-
Numerical simulation of rotary desiccant dehumi...
- Auteurs : JANI D. B., MISHRA M., SAHOO P. K.
- Date : 16/08/2015
- Langues : Anglais
- Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Formats : PDF
Voir la fiche
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Experimental analysis on the performances of a ...
- Auteurs : ANGRISANI G., MINICHIELLO F., ROSELLI C., et al.
- Date : 06/04/2011
- Langues : Anglais
- Source : Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
- Formats : PDF
Voir la fiche