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Etude sur un cycle frigorifique à adsorption utilisant des fibres de carbone actifs. 1. Caractéristiques d'adsorption.

Study on adsorption refrigeration cycle utilizing activated carbon fibres. 1. Adsorption characteristics.

Auteurs : HAMAMOTO Y., ALAM K. C. A., SAHA B. B., et al.

Type d'article : Article, Article de la RIF

Résumé

Thermal-heat driven adsorption systems using natural refrigerants have been focused on the recent energy utilization trend. However, the drawbacks of these adsorption systems are their poor performance in terms of system cooling capacity and COP. The objective of this paper is to improve the performance of thermally powered adsorption cooling system by selecting new adsorbent-refrigerant pair. Adsorption capacity of adsorbent-refrigerant pair depends on the thermophysical properties (pore size, pore volume and pore diameter) of adsorbent and isothermal characteristics of the pair. In this paper, the thermophysical properties of two PAN types of activated carbon fibres (FX-400 and KF-1000) are determined from the nitrogen adsorption isotherms. The standard nitrogen gas adsorption/desorption measurements on various adsorbents at liquid nitrogen of temperature 77.3 K were performed. The adsorption capacity of FX-400 is about 30% higher than that of KF-1000. The adsorption equilibrium data of activated carbon fibre (ACF)-methanol are presented and correlated with simple equations. The adsorption equilibrium data of ACF (KF-1000)-water also presented in order to facilitate comparison with those of ACF-methanol pair. The results will contribute significantly in designing the adsorber/desorber heat exchanger for thermally-driven adsorption cooling systems. (See also this Bulletin, reference 2006-1210.)

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Format PDF

Pages : 305-314

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    20 €

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    Gratuit

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Détails

  • Titre original : Study on adsorption refrigeration cycle utilizing activated carbon fibres. 1. Adsorption characteristics.
  • Identifiant de la fiche : 2006-1209
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 2
  • Date d'édition : 03/2006

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