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Performance characterization of small variable-capacity reciprocating compressors using a minimal dataset.

Caractérisation de la performance des petits compresseurs à piston à puissance variable à l’aide d’un ensemble de données minimum.

Auteurs : SANTOS G. Z., RONZONI A. F., HERMES C. J. L.

Type d'article : Article, Article de la RIF

Résumé

This paper presents a semi-empirical modelling approach for predicting the performance characteristics of variable-capacity crankshaft and linear reciprocating compressors for household and light commercial refrigeration applications. The model is built on thermodynamic grounds, and its key parameters are calibrated using experimental data. A total of 33 crankshaft compressors were used for validation purposes, being 26 single-speed and 7 variable-speed, with strokes ranging from 2 to 20 cm ³. For conventional single-peed compressors, approximately 97% of the mass flow rate and 93% of the power consumption data presented errors within the 10% thresholds. For variable-speed compressors, more than 95% of the datapoints presented absolute errors lower than 10% for both power consumption and mass flow rate. In addition, the proposed approach was employed to predict the performance of a linear oil-free compressor with variable-displacement capacity control, showing errors for performance characteristics within the range of the experimental uncertainties.

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Format PDF

Pages : 191-201

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Détails

  • Titre original : Performance characterization of small variable-capacity reciprocating compressors using a minimal dataset.
  • Identifiant de la fiche : 30026977
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 107
  • Date d'édition : 11/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.07.014

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