An Approach to Performance Prediction of Gas-Wet Steam Turbo Expanders PUBLIC ACCESS

[+] Author Affiliations
Ling Zhi-Guang, Li Shu-Lian

Chinese Academy of Sciences, Beijing, China

Fei Yang

Chinese University of Science and Technology, Hefei, China

Paper No. 85-IGT-34, pp. V001T02A012; 6 pages
  • ASME 1985 Beijing International Gas Turbine Symposium and Exposition
  • Volume 1: Aircraft Engine; Turbomachinery
  • Beijing, People’s Republic of China, September 1–7, 1985
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7942-9
  • Copyright © 1985 by ASME


Means of predicting aerothermodynamic characteristics of turbines and expanders with gas-wet steam working medium and having condensation and release of latent heat of vaporization during expansion process are studied. After discussing the basic relations and fundamental equations of such process, a simple method is suggested on the basis of introducing the concept of replacing the condensing and heat release process thermodynamically by an equivalent polytropic process with an equivalent index.n. By such replacement the usual gas medium calculation program could be used and performance prediction could be easily made. Details of calculation procedures are recommended. The calculated performance of a blast furnace top gas turbo expander by this method shows good agreement with tested results.

Copyright © 1985 by ASME
Topics: Turbochargers , Steam
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