This paper investigates effects of interstage water injection on the performance of a GE Frame 7EA gas turbine using aerothermodynamic modeling. To accomplish this objective, a computational code, written in FORTRAN 90 language and developed by DIEM University of Bologna, has been used. The calculation procedure considers effects of evaporation of injected water within the compressor including droplets dynamics, which are necessary in order to fully evaluate effects of wet compression on the gas turbine performance. The robustness of the computational code is demonstrated by evaluating stage-by-stage compressor performance and the overall gas turbine performance in the presence of inlet evaporative fogging, overspray fogging, and interstage water injection. The presented results show that water injection location influences compressor stage loading redistribution differently. The plausible explanations to the observed trends of various performance parameters are presented in this paper.
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January 2008
Research Papers
Application of a Computational Code to Simulate Interstage Injection Effects on GE Frame 7EA Gas Turbine
M. Bagnoli,
M. Bagnoli
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
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M. Bianchi,
M. Bianchi
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
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F. Melino,
F. Melino
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
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A. Peretto,
A. Peretto
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
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P. R. Spina,
P. R. Spina
ENDIF,
University of Ferrara
, Via Saragat, 44100 Ferrara, Italy
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R. K. Bhargava
R. K. Bhargava
Foster Wheeler USA Corp.,
2020 Dairy Ashford Road, Houston, TX 77077
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M. Bagnoli
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
M. Bianchi
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
F. Melino
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
A. Peretto
DIEM University of Bologna
, Viale Risorgimento, 2-40136 Bologna, Italy
P. R. Spina
ENDIF,
University of Ferrara
, Via Saragat, 44100 Ferrara, Italy
S. Ingistov
WCC/BP
R. K. Bhargava
Foster Wheeler USA Corp.,
2020 Dairy Ashford Road, Houston, TX 77077J. Eng. Gas Turbines Power. Jan 2008, 130(1): 012001 (10 pages)
Published Online: December 17, 2007
Article history
Received:
June 28, 2006
Revised:
October 17, 2006
Published:
December 17, 2007
Citation
Bagnoli, M., Bianchi, M., Melino, F., Peretto, A., Spina, P. R., Ingistov, S., and Bhargava, R. K. (December 17, 2007). "Application of a Computational Code to Simulate Interstage Injection Effects on GE Frame 7EA Gas Turbine." ASME. J. Eng. Gas Turbines Power. January 2008; 130(1): 012001. https://doi.org/10.1115/1.2771247
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