Partager

Régulation du givrage sur une plaque plate horizontale orientée vers le haut utilisant un champ électrique.

Frost accumulation control on an upward-facing horizontal flat plate using electric field.

Auteurs : JOPPOLO C. M., MOLINAROLI L.

Résumé

The paper discusses the results of an experimental study carried out to investigate the influence of a DC electric field on frost formation and accumulation on an upward-facing flat plate. An experimental setup was built to investigate the influence of the electric field intensity and uniformity on frost mass accumulated on the flat surface and to analyze its dependence on cold surface temperature, air velocity and test duration. In the experiments different electrode geometries were adopted allowing to compare uniform electric field with non-uniform ones. Every experiment was conducted under controlled environmental conditions (air dry bulb temperature and air relative humidity), which were appropriate for heat pump applications and not well investigated in open literature. The results show that the electric field allows reducing the frost mass accumulated on flat plate surface up to a value of 26% while the power required to maintain the electric field is quite low. They also suggest that a uniform electric field could achieve better results even if its applicability has to be deeply considered.

Détails

  • Titre original : Frost accumulation control on an upward-facing horizontal flat plate using electric field.
  • Identifiant de la fiche : 2010-0116
  • Langues : Anglais
  • Source : 2009 ASHRAE Annual Conference CD. Transactions papers presented at the 2009 ASHRAE Annual Conference: Louisville, KY, June 2009. Volume 115, part 2.
  • Date d'édition : 21/06/2009

Liens


Voir d'autres communications du même compte rendu (30)
Voir le compte rendu de la conférence

Indexation