Résumé
A comparison among three adsorption pairs (activated carbon-methanol, silica gel-water and 13X molecular sieves-water) for using as the working substances in a four-bed adsorption heat pump is presented. A solid-side resistance model considering a finite mass flowrate of heating/cooling fluid was adopted. The result shows that, for small mass flowrates of the heating/cooling fluid, assuming a constant temperature for the heating/cooling fluid might give rise to an over-predication of the system performance. For the adsorption heat pump, there exists an optimum mode operating time which corresponds to a maximum specific cooling power. For operations at the maximum specific cooling power (optimum mode operating time = 3-6 min) and with regeneration temperatures in the range 80-120°C, among the three adsorption pairs, the activated carbon-methanol pair leads to the highest specific cooling power, COP value and second-law efficiency. For the silica gel-water pair, the temperature rise resulting from adsorption heat significantly downgrades the system performance. This causes its corresponding specific cooling power, COP value and second-law efficiency to be lower than those for the activated carbon-methanol pair. The 13X molecular sieves-water pair possesses. [Reprinted with permission from Elsevier. Copyright, 2007].
Détails
- Titre original : Comparison among three adsorption pairs for using as the working substances in a multi-bed adsorption heat pump.
- Identifiant de la fiche : 2008-1632
- Langues : Anglais
- Source : Applied Thermal Engineering - vol. 28 - n. 8-9
- Date d'édition : 06/2008
Liens
Voir d'autres articles du même numéro (3)
Voir la source
Indexation
-
Development research on composite adsorbents ap...
- Auteurs : HUANG H., OIKE T., WATANABE F., et al.
- Date : 07/2010
- Langues : Anglais
- Source : Applied Thermal Engineering - vol. 30 - n. 10
Voir la fiche
-
Evaluation of the performance of solid sorption...
- Auteurs : ZHONG Y., CRITOPH R. E., THORPE R.
- Date : 11/2006
- Langues : Anglais
- Source : Applied Thermal Engineering - vol. 26 - n. 16
Voir la fiche
-
Thermodynamic analysis of activated carbon-meth...
- Auteurs : SHARKAWY I. I. el-, SAHA B. B., HASSAN M., et al.
- Date : 20/05/2009
- Langues : Anglais
- Source : ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
- Formats : PDF
Voir la fiche
-
Annular-finned sorption bed heat exchanger desi...
- Auteurs : RAYMOND A., GARIMELLA S.
- 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
-
Performance improvement and comparison of mass ...
- Auteurs : LU Z. S., WANG R. Z.
- Date : 08/2013
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 5
- Formats : PDF
Voir la fiche