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Development and experimental validation of a fast prediction model for scroll compressors with two-phase injection.

Auteurs : WANG L., CAO H., DING G., SHAO Y., YUE B., WU Z., LIAO J.

Type d'article : Article de la RIF

Résumé

In refrigerant-injected heat pumps, scroll compressors may operate under vapor injection (VI) or two-phase injection (TPI) conditions. For the design of heat pump systems, establishing a fast prediction model of compressor performance is important; however, existing ones are limited to VI scenarios. This study aims to
propose a scroll compressor model for both VI and TPI conditions, simultaneously meeting the requirements of fast calculation speed, accurate prediction, reasonable extrapolation trends and minimal calibration data. In the proposed model, the suction mass flow rate is calculated based on volumetric efficiency; the injection mass flow rate is determined using the orifice equation and corrected with two-phase pressure drop multiplier; the discharge mass flow rate is the sum of suction and injection mass flow rates; the input power is calculated using isentropic compression assumption with isentropic efficiency related to pressure terms; the discharge temperature is calculated based on energy conservation, and all these parameters are explicitly formulated to increase the computation speed. Calorimeter tests are conducted to acquire compressor performance data under both VI and TPI conditions for model validation. The validation results show that the proposed model offers millisecond-level calculation time; the average prediction deviations of suction, injection, discharge mass flow rates and input power from the experimental data are all within 3%; and the average deviation of discharge temperature is within 3 ◦C. Furthermore, the proposed model exhibits physically reasonable parameters variation trends during extrapolation, and requires only 8 sets of VI and 3 sets of TPI data for calibration.

Documents disponibles

Format PDF

Pages : 15 p.

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 : Development and experimental validation of a fast prediction model for scroll compressors with two-phase injection.
  • Identifiant de la fiche : 30035266
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 189
  • Date d'édition : 09/2026
  • DOI : http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2026.107016

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