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Non adiabatic centrifugal compressor gas dynamic performance definition.

Number: pap. 1123

Author(s) : SOLDATOVA K. V.

Summary

Compression process for most turbo compressors is adiabatic, i.e. heat transfer to compressed gas is negligible. It gives a possibility to define mechanical work input and efficiency as functions of gas total temperature rise. Compressed gases in centrifugal compressors of small GT and of turbochargers get sufficient heat energy from a very hot turbine and pass a part of heat energy to ambience. Temperature rise does not correspond to mechanical energy of a driver if compression is non adiabatic. Performance modeling computer programs of TU SPb were applied to small turbocharger test data presented by colleagues from Hanover University (Germany). Several suppositions were formulated that made possible to predict performance curves of efficiency and pressure ratio of the compressor wide range of RPM corresponding to periphery Mach numbers within the range of 0,73 - 1,44.

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Pages: 9 p.

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Details

  • Original title: Non adiabatic centrifugal compressor gas dynamic performance definition.
  • Record ID : 30013867
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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