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Document IIF

Chute de pression en écoulement diphasique des mélanges ammoniac-eau à l'intérieur de minicanaux.

Two-phase flow pressure drop of ammonia-water mixtures in mini-channels.

Numéro : pap. n. 157

Auteurs : BOR D. van de, LEEUWEN J. van, VASILESCU C., et al.

Résumé

Absorption and desorption of ammonia-water solution is under study in order to optimize the design of the heat exchangers contained in compression-resorption heat pumps. This paper investigates the pressure drop of ammonia-water two-phase flow in mini-channels heat exchangers. Experiments were performed to measure two-phase pressure drop in a vertical mini-channels with inner diameter of 2 mm and 0.8 m length. The experimental pressure drop is compared with some existing pressure drop correlations. The suitability of previously published correlations for prediction of pressure drop in mini-channels during absorption and desorption is evaluated. All the prediction methods considered overpredict the present ammonia-water data.

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Pages : 8 p.

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Détails

  • Titre original : Two-phase flow pressure drop of ammonia-water mixtures in mini-channels.
  • Identifiant de la fiche : 30004283
  • Langues : Anglais
  • Source : 10th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2012). Proceedings. Delft, The Netherlands, June 25-27, 2012.
  • Date d'édition : 25/06/2012

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