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Mathematical modelling of scroll compressors. 2. Overall scroll compressor modelling.

Author(s) : CHEN Y., HALM N. P., BRAUN J. E., et al.

Type of article: Article, IJR article

Summary

This paper presents the development of a comprehensive simulation model of a horizontal scroll compressor, which combines a detailed compression process model. In the overall model, compressor components are analyzed in terms of nine different elements. Steady state energy balance equations are established applying the lumped capacitance method. In combination with the detailed compression process model, these equations were implemented into computer code and solved recursively. In this way, the temperature and pressure of the refrigerant in different compressor chambers, the temperature distributions in the scroll wraps, and the temperatures of the other compressor elements can be obtained. Thereafter, power consumption and efficiency of the compressor can be calculated. Tests were used to verify the overall model on a macroscopic basis. Using the simulation program based on the overall compressor model, a parametric study of the scroll compressor was performed, and the effects of internal leakage and heat transfer losses were investigated and some preliminary results were obtained. These results indicate that the comprehensive scroll compressor model is capable of predicting real compressor behavior and useful to the design and optimization of scroll compressors.

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Pages: 751-764

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Details

  • Original title: Mathematical modelling of scroll compressors. 2. Overall scroll compressor modelling.
  • Record ID : 2003-0729
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 25 - n. 6
  • Publication date: 2002/09

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