Partager

Etudes expérimentales sur le début du givrage des plaques avec des écoulements à faible vitesse.

Experimental studies on the icing-onset on plates in low speed flows.

Auteurs : REICHL C., PAUSCHENWEIN G., WINDHOLZ B., et al.

Résumé

Ice aggregation on plates and tubes in heat exchangers and surrounding components is an important issue both in sustainable refrigeration and heat pump applications. Ice leads to reduced efficiency by directly altering the thermal conductivity conditions. Furthermore, increasing pressure losses due to blocking of the flow cross-sections affect the achievable heat transfer significantly. Therefore it is of utmost importance to understand the onset of ice aggregation and its dependence on relative humidity, flow speed, turbulent structures in the flow and both the surrounding and the plate temperature. To study the onset of ice aggregation, a wind tunnel is constructed. The wind tunnel flow patterns are characterized using PIV and CTA analyzing the turbulence structures. High speed and thermo-camera visualisation is used to monitor the icing onset. The results will provide the base for numerical ice-onset simulations, which will be capable of predicting onset-times and ice-thickness estimations leading to energy efficient designs.

Documents disponibles

Format PDF

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : Experimental studies on the icing-onset on plates in low speed flows.
  • Identifiant de la fiche : 2011-0212
  • Langues : Anglais
  • Source : IIR/Eurotherm sustainable refrigeration and heat pump technology conference. Proceedings of the Eurotherm Seminar No. 88, Stockholm, Sweden, June 13-16, 2010.
  • Date d'édition : 13/06/2010

Liens


Voir d'autres communications du même compte rendu (49)
Voir le compte rendu de la conférence

Indexation