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Chute de pression diphasique du CO2, de l'ammoniac et du R-245fa dans des microcanaux en aluminium à plusieurs orifices.

Two-phase pressure drop of CO2, ammonia and R-245fa in multiport aluminium microchannel tubes.

Auteurs : ADAMS D. C., BURR J., HRNJAK P., et al.

Résumé

An experimental investigation of adiabatic, two-phase, frictional pressure drop was conducted using 6-port and 14-port microchannels with hydraulic diameters of 1.54 and 1.02 mm, respectively. Two-phase fluid flow conditions include mass fluxes from 50 to 440 kg/s.m2, qualities between 0 and 1, and saturation temperatures for working fluids carbon dioxide at 15°C, ammonia at 35°C, and R-245fa at 40°C. Experimentation indicates that two-phase pressure drop is dependent upon the average kinetic energy density of the flow, hydraulic diameter, and friction factor, allowing the single-phase pressure drop equation with a modified homogeneous fluid density to predict two-phase pressure drop.

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  • 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 : Two-phase pressure drop of CO2, ammonia and R-245fa in multiport aluminium microchannel tubes.
  • Identifiant de la fiche : 2007-1485
  • Langues : Anglais
  • Source : 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Date d'édition : 17/07/2006

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