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Document IIF

Simulations de performance de transfert de masse et de chaleur d’un nouvel absorbeur composite.

Performance simulations of heat and mass transfer of a novel compound absorber.

Numéro : pap. n. 751

Auteurs : YUAN W., LI Y., GUO Y., et al.

Résumé

The miniaturization of absorption heat pump is mainly restricted by the conventional shell-and-tube absorber which requires large heat and mass transfer area. This paper proposed a novel type of plate-fin flat heat pipe absorber (PFFHPA) with compact structure and low metal consumption. In this paper, by building the mass balance equations, energy balance equations, phase equilibrium equations of ammonia-water and heat and mass transfer characteristic equations, a twodimensional numerical model is developed to simulate the heat and mass transfer process of the absorber. The model takes account of the distribution of liquid-phase temperature and concentration, heat transfer coefficient and absorption rate. A parametric analysis is also conducted to assess the effect of inlet conditions and pressures on the absorption performance. As expected, the novel structure is conducive to a great volume reduction of the absorber by 70% and thereby the entire volume of absorption heat pump system can be greatly reduced in comparison with theconventional heat pumpwith shell-and-tube absorber.

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Pages : 8

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  • 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 : Performance simulations of heat and mass transfer of a novel compound absorber.
  • Identifiant de la fiche : 30026030
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0751

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