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Document IIF

Simulation d'un absorbeur/échangeur de chaleur hybride utilisant un module à membrane à fibre creuse dans un cycle à absorption ammoniac/eau.

Simulation study of a hybrid absorber-heat exchanger using hollow fibre membrane module for the ammonia-water absorption cycle.

Auteurs : CHEN J., CHANG H., CHEN S. R.

Type d'article : Article, Article de la RIF

Résumé

An innovative hybrid hollow fibre membrane absorber and heat exchanger (HFMAE) made of both porous and nonporous fibres is proposed and studied via mathematical simulation. The porous fibres allow both heat and mass transfers between absorption solution phase and vapour phase, while the nonporous fibres allow heat transfer between absorption solution phase and cooling fluid phase only. The application of HFMAE on an ammonia-water absorption heat pump system as a solution-cooled absorber is analyzed and compared to a plate heat exchanger falling film type absorber. The substantially higher amount of absorption obtained by the HFMAE is made possible by the vast mass transfer interfacial area per unit device volume provided. The most dominant factor affecting the absorption performance of the HFMAE is the absorption solution phase mass transfer coefficient. The application of HFMAE as the solution-cooled absorber and the water-cooled absorber in a typical ammonia-water absorption chiller allows the increase of COP by 14.8% and the reduction of the overall system exergy loss by 26.7%.

Documents disponibles

Format PDF

Pages : 1043-1052

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Simulation study of a hybrid absorber-heat exchanger using hollow fibre membrane module for the ammonia-water absorption cycle.
  • Identifiant de la fiche : 2006-2331
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 6
  • Date d'édition : 09/2006

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