Full Content is available to subscribers

Subscribe/Learn More  >

Comparative Evaluation of Advanced Gas Turbine Cycles With Modified Blade Cooling Models

[+] Author Affiliations
Arian Tabari, Hiwa Khaledi, Ali Hajilouy Benisi

Sharif University of Technology, Tehran, Iran

Paper No. GT2006-90932, pp. 537-546; 10 pages
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 4: Cycle Innovations; Electric Power; Industrial and Cogeneration; Manufacturing Materials and Metallurgy
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4239-8
  • Copyright © 2006 by ASME


Advanced gas turbine cycles use advanced blade cooling technologies to reach high turbine inlet temperature. Accurate modeling and optimization of these cycles depend on blade cooling model. In this study, different models have been used to simulate gas turbine performance. The first model is the continuous model and the second is stage-by-stage model with alternative methods for calculating coolant, stagnation pressure loss and SPR. Variation of specific heat and enthalpy with temperature are included in both models. The composition of gas stream in turbine is changed step by step due to air cooling. These models are validated by two case study gas turbine results, which show good agreement with manufacture’s data. Then using these models, a comparison between continuous and stage by stage models is done. Results show that the stage by stage model can be improved to use in variable CPR by changing number of turbine stages. Also, the number of film cooled rows and coated rows change the number of cooled rows. This also increases power, efficiency and TET, while reduces coolant mass flow. For high TIT and with current blade cooling technology, efficiency seems to have no increase relative to lower TIT. CAP increases power but decreases efficiency, where with FP efficiency also increases, while power increases too.

Copyright © 2006 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In