THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

STUDY ON EFFECTIVE PARAMETER OF THE TRIPLE-PRESSURE REHEAT COMBINED CYCLE PERFORMANCE

ABSTRACT
The thermodynamic analyses of the triple-pressure reheat combined cycle gas turbines with duct burner are presented and discussed in this paper. The overall performance of a combined cycle gas turbine power plant is influenced by the ambient temperature, compression ratio and turbine inlet temperature. These parameters affect the overall thermal efficiency, power output and the heat-rate. In this study a thermodynamic model was development on an existing actual combined cycle gas turbine (CCGT) (In this case study, an effort has been made to enhance the performance of the CCGT through a parametric study using a thermodynamic analysis. The effect of ambient temperature and operation parameter, including compression ratio and turbine inlet temperature, on the overall performance of CCGT are investigated. The code of the performance model for CCGT power plant was developed utilizing the THERMOFLEX software. The simulating results show that the total power output and overall efficiency of a CCGT decrease with increase the ambient temperature because increase the consumption power in the air compressor of a GT. The totals power of a CCGT decreases with increase the compression rate, while the overall efficiency of a CCGT increases with increase the compression ratio to 21, after that the overall efficiency will go down. Far there more the turbine inlet temperature increases the both total power and overall efficiency increase, so the turbine inlet temperature has a strong effect on the overall performance of CCGT power plant. Also the simulation model give a good result compared with MARAFIQ CCGT power plant. With these variables, the turbine inlet temperature causes the greatest overall performance variation.
KEYWORDS
PAPER SUBMITTED: 2011-10-16
PAPER REVISED: 2011-10-16
PAPER ACCEPTED: 2011-10-26
DOI REFERENCE: https://doi.org/10.2298/TSCI111016143I
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2013, VOLUME 17, ISSUE Issue 2, PAGES [497 - 508]
REFERENCES
  1. Godoy, E., Scenna, N.J., Benz, S.J., Families of optimal thermodynamic solutions for combined cycle gas turbine (CCGT) power plants. Applied Thermal Engineering. 30(2010), pp. 569-576.
  2. Ameri, M., Ahmadi, P., Khanmohammadi, S., Exergy analysis of a 420MW combined cycle power plant. International Journal of Energy Research. 32(2008), pp. 175-183.
  3. Franco, Al., Analysis of small size combined cycle plants based on the use of supercritical HRSG. Applied Thermal Engineering. 31(2011), pp. 785-794.
  4. Ghazikhani, M., Passandideh-Fard, M., Mousavi, M., Two new high-performance cycles for gas turbine with air bottoming. Energy. 36(2011), pp. 294-304.
  5. Darwish, M.A., The cogeneration power-desalting plant with combined cycle: a computer program. Desaltination. 127(2000), pp. 27-45.
  6. Mitre J.F., Lacerda A.I. and Lacerda R.F., Modeling and simulation of thermoelectric plant of combined cycles and its environmental impact. Thermal Engineering. 4(2005), 1, pp. 83-88.
  7. Kaushika, S.C., Reddya, V. S., Tyagi, S.K., Energy and exergy analyses of thermal power plants: A review. Renewable and Sustainable Energy Reviews. 15(2011), pp. 1857-1872.
  8. CHIH, W., Thermodynamics and heat powered cycles: a cognitive engineering approach. Nova Science Publishers, Inc. New York (2007).
  9. Bouam, A., Aïssani, S., Kadi, R., Gas Turbine Performances Improvement using Steam Injection in the Combustion Chamber under Sahara Conditions. Oil & Gas Science and Technology - Revue d'IFP Energies Nouvelles. 63(2008), 2, pp. 251-261.
  10. Carapellucci, R., Milazzo, A., Repowering combined cycle power plants by a modified STIG configuration. Energy Conversion and Management. 48(2007), 5, pp. 1590-600.
  11. Sheikhbeigi, B, and Ghofrani, M.B., Thermodynamic and environmental consideration of advanced gas turbine cycles with reheat and recuperator. International journal of Environmental Science and Technology. 4 (2007), 2, pp. 253-262.
  12. Khaliq, A., Kaushik, S.C., Thermodynamic performance evaluation of combustion gas turbine cogeneration system with reheat. Applied Thermal Engineering. 24(2004), pp. 1785-1795.
  13. Sullerey, R.K., Ankur, A.. Performance Improvement of Gas Turbine Cycle. Advances in Energy Research. (2006), pp. 22-27.
  14. Razak, A.M.Y., Industrial gas turbines Performance and operability. Woodhead Publishing Limited and CRC Press LLC, Cambridge England, 2007.
  15. Avval, H.B., Ahmadi, P., Thermodynamic modeling of combined cycle power plant with gas turbine blade cooling. In: Proc. of the second Iranian thermodynamic congress, Isfahan, Iran (2007).
  16. Ahmadi, P., Dincer, I., Thermodynamic analysis and thermoeconomic optimization of a dual pressure combined cycle power plant with a supplementary firing unit. Energy Conversion and Management, 52(2011), pp. 2296-2308.
  17. Meigounpoory, M.R., Ahmadi, P., Ghaffarizadeh, A.R., Khanmohammadi, S.H., Optimization of combined cycle power plant using sequential quadratic programming. ASME 2008. Heat transfer summer conference collocated with the fluids engineering, (2008), pp. 109-14.
  18. Ibrahim, T.K., Rahman, M.M., Abdalla, A.N., Study on the effective parameter of gas turbine model with intercooled compression process. Scientific Research and Essays, 5(2010) 23, pp. 3760-3770.
  19. Rahman, M.M., Ibrahim, T.K., Abdalla, A.N., Thermodynamic performance analysis of gas-turbine power-plant. International Journal of the Physical Sciences, 6(2011), 14, pp. 3539-3550.
  20. Melino, D.F., A parametric evaluation of fogging technology for gas turbine performance enhancement. Alma Mater Studiorum Universita' Degli Studi Di Bologna, PhD Thesis, 2000.

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence