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Investigation of the calculation model of polytropic head for real gases

  • Guang Xi
  • , Bo Zhang
  • , Feng Liang
  • , Hua Jiang
  • Xi'an Jiaotong University
  • Xi'an University of Science and Technology

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Two direct integration models of polytropic head analysis are presented, and the program codes are developed. It is found that the models of direct integration procedure are more accurate than that of average polytropic exponent in the polytropic head calculation. When the pressure ratio being large, the direct integration method still keeps higher accuracy while the error of the model of averaged polytropic exponent obviously increases even by over 4%.

Original languageEnglish
Pages (from-to)1856-1858
Number of pages3
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Volume30
Issue number11
StatePublished - Nov 2009

Keywords

  • Centrifugal compressor
  • Polytropic analysis
  • Preliminary design
  • Real gas

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