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Caractéristiques du débit massique et modélisation empirique de R-22 et de R-410A en écoulement dans les détendeurs électroniques.

Mass flow characteristics and empirical modelling of R-22 and R-410A flowing through electronic expansion valves.

Auteurs : PARK C., CHO H., LEE Y., et al.

Type d'article : Article, Article de la RIF

Résumé

The applications of electronic expansion valves (EEVs) into multi-type heat pumps and inverter heat pumps in building air-conditioning systems have increased for comfort environmental control and energy conservation. However, test data and mass flow models of EEVs are very limited in open literature. The objectives of this study are to investigate the mass flow characteristics of R-22 and R-410A through EEVs and to develop an empirical correlation for the prediction of mass flow rates of R-22 and R-410A through EEVs. Mass flow rates through six EEVs were measured by varying the EEV opening, inlet and outlet pressures, and the subcooling. Mass flow rates of R-410A were compared with those of R-22 at the same test conditions. Based on the experimental data, an empirical correlation for mass flow predictions in EEVs was developed by modifying the orifice equation. The predictions of the present correlation showed good agreement with the measured data with average and standard deviations of 0.76 and 5.9%, respectively. Approximately 92% of the measured data were within plus or minus 10% of the predictions.

Documents disponibles

Format PDF

Pages : 1401-1407

Disponible

  • 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 : Mass flow characteristics and empirical modelling of R-22 and R-410A flowing through electronic expansion valves.
  • Identifiant de la fiche : 2008-0151
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 8
  • Date d'édition : 12/2007

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