0
TECHNICAL PAPERS

The Basic Thermodynamics of Turbine Cooling

[+] Author and Article Information
J. H. Horlock

Whittle Laboratory, Engineering Department, Cambridge University, United Kingdom

J. Turbomach 123(3), 583-592 (Mar 01, 2000) (10 pages) doi:10.1115/1.1370156 History: Received March 01, 2000
Copyright © 2001 by ASME
Your Session has timed out. Please sign back in to continue.

References

Hawthorne,  W. R., and Davis,  G. de V., 1956, “Calculating Gas Turbine Performance,” Engineering, 181, p. 361.
Elmasri,  M. A., 1987, “Energy Analysis of Combined Cycles: Part 1—Air-Cooled Brayton-Cycle Gas Turbines,” ASME J. Eng. Gas Turbines Power, 109, pp. 228–235.
Chiesa, P., Consonni, S., Lozza, G., and Macchi, E., 1993, “Predicting the Ultimate Performance of Advanced Power Cycles Based on Very High Temperatures,” ASME Paper No. 93-GT-223.
MacArthur, C. D., 1999, “Advanced Aero-engine Turbine Technologies and Their Application to Industrial Gas Turbines,” ISABE Paper No. 99-7151, 14th International Symposium on Air-Breathing Engines, Florence, Italy.
Horlock, J. H., Watson, D. E., and Jones, T. V., 2000, “Limitations on Gas Turbine Performance Imposed by Large Turbine Cooling Flows,” ASME Paper No. 2000-GT-0635.
Denton, J. D., 1993, “Loss Mechanisms in Turbomachines,” ASME Paper No. 93-GT-435.
Young, J. B., and Wilcock, R. C., 2001, “Modelling the Air-Cooled Gas Turbine, Part 1,” ASME paper, to be published.
Traupel, W., 1966, Thermische Turbomaschinen, Springer-Verlag, Berlin.
Hawthorne,  W. R., 1956, “The Thermodynamics of Cooled Turbines, Parts I and II,” Proc. ASME, 78, pp. 1765, 1781.
Elmasri,  M. A., 1986, “On Thermodynamics of Gas Turbine Cycles: Part II Model for Expansion in Cooled Turbines,” ASME J. Eng. Gas Turbines Power, 108, pp. 151–159.
Horlock,  J. H., and Woods,  W. A., 2000, “Determination of the Optimum Performance of Gas Turbines,” Proc. Instn. Mech. Eng., 214C, pp. 243–255.
Mukherjee, D. K., 1976, “Design of Turbines, Using Distributed or Average Losses; Effect of Blading,” AGARD 195, 8-1.
Walsh, P. P., and Fletcher, P., 1998, Gas Turbine Performance, Blackwell Science, Oxford.
Hartsel, J. E., 1972, “Prediction of Effects of Mass-Transfer Cooling on the Blade-Row Efficiency of Turbine Airfoils,” AIAA Paper No. 72-11..-8-13.
Young, J. B., 1998, “Computer-Based Project on Combined-Cycle Power Generation,” Cambridge University Engineering Department Report.
Wilcock, R. C., and Young, J. B., 2001b, Real Gas Effects on Gas Turbine Plant Efficiency (to be published).
Elmasri,  M. A., 1988, “GASCAN—An Interactive Code for Thermal Analysis of Gas Turbine Systems,” ASME J. Eng. Gas Turbines Power, 110, pp. 201–209.

Figures

Grahic Jump Location
(a) Basic Joule-Brayton cycle, [CHT]RU; (b) reversible cycle with single-step cooling, [CHT]RC1
Grahic Jump Location
Breakdown of [CHT]RC1 cycle
Grahic Jump Location
(a) Reversible cycle with two-step cooling, [CHT]RC2; (b) reversible cycle with two step cooling, low pressure air throttled, [CHT]RC2T
Grahic Jump Location
Multistep reversible cooling
Grahic Jump Location
(a) Irreversible cycle with single-step cooling, [CHT]IC1; (b) irreversible cycle with two step cooling, low pressure air throttled, [CHT]IC2T
Grahic Jump Location
Diagrams showing variations in thermal efficiency with maximum temperatures
Grahic Jump Location
Real gas thermal efficiency calculations, [CHT]IU and [CHT]IC1. For r=30,ηc=0.8,ηt=0.9,TBL=1123 K, convective cooling (using the Elmasri expression for cooling fraction, with K=0.05, no mixing losses). Maximum temperatures absolute (K ).
Grahic Jump Location
Real gas calculations of thermal efficiency and specific work, for single step cooling cycle [CHT]IC1pcpt=0.9,TBL=1073 K, film cooling with combustion and mixing stagnation pressure losses, after Horlock et al. 5.
Grahic Jump Location
Real gas calculations of thermal efficiency and specific work, for three-step cooling cycle [CHT]IC3Tpcpt=0.9,TBL=1073 K, film cooling, with combustion and mixing stagnation pressure losses, after Horlock, Watson, and Jones 5.

Tables

Errata

Discussions

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 Journal Articles
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