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Theoretical and experimental study on indicator diagram of a twin-screw refrigeration compressor.

Author(s) : WU H., XING Z., SHU P.

Type of article: Article, IJR article

Summary

In this article, a new mathematical model for calculating the indicator diagram of a twin-screw refrigeration compressor is presented. The geometric parameters related to the rotation angle of the male rotor are used in the model and include groove volume, suction and discharge port area, slide valve bypass port area, leakage area etc. The effects of internal leakage through five paths, oil injection, gas-oil heat transfer, refrigerant property and partial loading etc. are taken into account simultaneously and separately in the theoretical study. To verify the model and the calculated p-V indicator diagram, experimental recording of p-V indicator diagram of twin-screw refrigeration compressor is carried out. Various indicator diagrams are recorded successfully using a small pressure sensor embedded in the bottom of the female rotor on the discharge side. The results of theoretical calculation are in good agreement with the measured data; this leads to the conclusion that the model can be used as a useful tool for performance prediction and product development.

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Pages: 331-338

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Details

  • Original title: Theoretical and experimental study on indicator diagram of a twin-screw refrigeration compressor.
  • Record ID : 2004-1697
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 27 - n. 4
  • Publication date: 2004/06

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