Detailed thermometry of flow paths of cooled gas turbines as a way to increase their technical and economical efficiency

2008 ◽  
Vol 55 (6) ◽  
pp. 469-472
Author(s):  
I. L. Osipov
Author(s):  
Richard A. Wenglarz

New applications and fuels (such as coal) that increase the potential for flow path degradation due to deposition, erosion, and corrosion (DEC) are being considered for gas turbines. Cascade and turbine DEC tests representing the flow paths of the specific turbines of concern will eventually be necessary for final verification of fuels and DEC control approaches. However, these tests are expensive and are not readily interpretable for other conditions (e.g., fuels and flow passage variations) than those tested. Consequently, relatively inexpensive simplified tests that provide an understanding of the DEC degradation processes are needed to screen the numerous possible candidate fuels and DEC control approaches. The most promising alternatives determined from simplified tests could then be verified in more expensive cascade and turbine tests. This paper discusses simplified DEC tests and complementary data extrapolation approaches that provide and interpret data in a manner that enhances understanding of DEC processes and that can be used to estimate DEC in operating turbines. A new test facility that has been designed for relatively inexpensive turbine DEC evaluations using these approaches is described.


Author(s):  
Anatoli Boiko ◽  
Yuri Govorushchenko ◽  
Aleksander Usaty ◽  
Oleksii Rudenko

A new technique for multi-parameter optimization of gas turbines flow paths considering a variable mode for their operation is presented. It allows the estimation of the influence of flow path optimization on performance parameters of gas-turbine units, such as power, efficiency, and fuel consumption. An algorithm for turbine flow path multi-criteria optimization that takes into account the gas-turbine unit operation mode is shown. Approaches to speed up the optimization process are described. Using this technique GT-750-6M low pressure turbine flow path optimization based on real working loads during one year is carried out and the results are analyzed. Due to optimization the unit efficiency was improved at all operating modes. The total fuel economy for considered period makes 50.831 t.


1968 ◽  
Vol 115 (3) ◽  
pp. 376 ◽  
Author(s):  
B.R. Myers ◽  
B.R. Myers ◽  
E.A. Davila
Keyword(s):  

1969 ◽  
Vol 48 (10) ◽  
pp. 454
Author(s):  
H.E. Gresham ◽  
Eric Mensforth ◽  
L.R. Beesley ◽  
D. Wilkinson ◽  
R.E. Mills ◽  
...  

Author(s):  
A.A. Khalatov ◽  
◽  
I.N. Karp ◽  
Yu.G. Kutsan ◽  
◽  
...  

1999 ◽  
Author(s):  
Ed O'Keefe ◽  
Matt Berge

Author(s):  
QI CHEN ◽  
◽  
JINTAO SUN ◽  
JIANYU LIU ◽  
BAOMING ZHAO ◽  
...  

Plasma-assisted ignition and combustion, widely applied in gas turbines, scramjets, and internal combustion engines, has been considered as a promising technique in shortening ignition delay time, improving combustion energy efficiency, and reducing emission. Nonequilibrium plasma can excite the gas molecules to higher energy states, directly dissociate or ionize the molecules and, thereby, has the potential to produce reactive species at residence time and location in a combustible mixture and then to efficiently accelerate the overall pyrolysis, oxidation, and ignition. Previous studies have demonstrated the effectiveness of plasma-assisted combustion by using direct current, alternating currant, microwave, radio frequency, and pulsed nanosecond discharge (NSD). Due to the complicated interaction between plasma and combustion in different types of plasma, detailed plasma-combustion chemistry is still not well understood.


2020 ◽  
Vol 40 (9) ◽  
pp. 759-762
Author(s):  
V. M. Kraev ◽  
A. I. Tikhonov ◽  
M. V. Siluyanova

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