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Comparison of part-load efficiency characteristics of screw and centrifugal compressors.

Author(s) : BRASZ J. J.

Summary

This paper will compare the relative part-load efficiency of screw and centrifugal compressors. Compressor part-load performance will be presented in the form of a two-dimensional performance map showing the head on the vertical axis as a function of flow on the horizontal axis with efficiency islands indicating efficiency for each possible head/flow combination. This way of presenting compressor performance is common for centrifugal compressors but novel for screw compressors. The compression efficiency comparison will focus on the vapor compression efficiency. Mechanical and/or electrical losses from bearings, transmission, drive and, in the case of variable speed drive-frequency converters, have to be added to obtain a valid overall compression efficiency comparison.

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Details

  • Original title: Comparison of part-load efficiency characteristics of screw and centrifugal compressors.
  • Record ID : 2007-2018
  • Languages: English
  • Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2006/07/17

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