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Performance improvement of a vaneless diffuser of centrifugal compressor.

Author(s) : ADACHI Y., BANDO K., MIYAKE Y., et al.

Summary

Performance tests were conducted for centrifugal compressors having vaneless diffusers whose flow passages are tapered at diffuser outlet portion. Both the beginning point of the tapered passage and its tapered throttle ratio were optimized experimentally. The optimum value of the tapered throttle ratio was 0.5. Both the surge margin and the compressor efficiency were improved over a wide range of flow rates, as compared with a compressor with a parallel wall diffuser. Surge inception can be predicted by detecting the pressure difference at the diffuser inlet.

Details

  • Original title: Performance improvement of a vaneless diffuser of centrifugal compressor.
  • Record ID : 1993-0213
  • Languages: English
  • Publication date: 1992/07/14
  • Source: Source: Proc. 1992 int. Refrig. Conf., Energy Effic. New Refrig., Purdue Univ.
    vol. 1; 93-102; 19 fig.; 1 tabl.; 11 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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