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Performance d'un prototype de refroidisseur à absorption au LiBr/H2O refroidi à l'air pendant une journée chaude. Résultats expérimentaux.

Performance of a novel directly air-cooled LiBr/H2O absorption chiller prototype on a hot day. Experimental results.

Numéro : pap. n. 125

Auteurs : LIZARTE R., IZQUIERDO M., PALACIOS E., et al.

Résumé

All the LiBr/H2O absorption chillers presently marketed are water cooled and the only air-cooled absorption chiller ever marketed is not available any more. This article describes an experimental trial conducted with a novel directly air-cooled 4.5-kW, single effect, LiBr-H2O absorption chiller prototype on a day when the outdoor dry bulb temperature ranged from 28°C to 37.7°C. The power source was a field of vacuum flat panel solar collectors and the room to be air-conditioned was 40 m2. Working fluid temperatures and flow rates are given, along with the heat demanded by the generator, the cooling capacity, and thermal, electrical and primary energy COP, among other results. The rate at which the LiBr/H2O solution flowed from the absorber to the generator was varied depending on the outdoor dry bulb temperature. No solution crystallization problems arose even when the feed temperature in the generator was 106°C. The absorption and condensation temperatures ranged, from 5°C to 7°C and from 10°C to 11°C, respectively, above the outdoor dry bulb temperature. Outlet chilled water and evaporation temperatures of around 16°C and 10°C, respectively, were obtained, while the mean daily thermal COPth was 0.62.

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Pages : 8 p.

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    20 €

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    Gratuit

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Détails

  • Titre original : Performance of a novel directly air-cooled LiBr/H2O absorption chiller prototype on a hot day. Experimental results.
  • Identifiant de la fiche : 30004269
  • 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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