The demand for more environmentally friendly and economic power production has led to an increasing interest to utilize alternative fuels. In the past, several investigations focusing on the effect of low-calorific fuels on the combustion process and steady-state performance have been published. However, it is also important to consider the transient behavior of the gas turbine when operating on nonconventional fuels. The alternative fuels contain very often a large amount of dilutants resulting in a low energy density. Therefore, a higher fuel flow rate is required, which can impact the dynamic behavior of the gas turbine. This paper will present an investigation of the transient behavior of the all-radial OP16 gas turbine. The OP16 is an industrial gas turbine rated at 1.9 MW, which has the capability to burn a wide range of fuels including ultra-low-calorific gaseous fuels. The transient behavior is simulated using the commercial software GSP including the recently added thermal network modeling functionality. The steady-state and transient performance model is thoroughly validated using real engine test data. The developed model is used to simulate and analyze the physical behavior of the gas turbine when performing load sheds. From the simulations, it is found that the energy density of the fuel has a noticeable effect on the rotor over-speed and must be considered when designing the fuel control.
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Transient Performance Analysis of an Industrial Gas Turbine Operating on Low-Calorific Fuels
W.P.J. Visser
W.P.J. Visser
Faculty of Aerospace Engineering,
Delft University of Technology,
Delft 2629HS, The Netherlands
e-mail: w.p.j.visser@tudelft.nl
Delft University of Technology,
Delft 2629HS, The Netherlands
e-mail: w.p.j.visser@tudelft.nl
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Vrishika Singh
Lars-Uno Axelsson
W.P.J. Visser
Faculty of Aerospace Engineering,
Delft University of Technology,
Delft 2629HS, The Netherlands
e-mail: w.p.j.visser@tudelft.nl
Delft University of Technology,
Delft 2629HS, The Netherlands
e-mail: w.p.j.visser@tudelft.nl
Contributed by the Coal, Biomass and Alternate Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 17, 2016; final manuscript received August 25, 2016; published online November 22, 2016. Editor: David Wisler.
J. Eng. Gas Turbines Power. May 2017, 139(5): 051401 (7 pages)
Published Online: November 22, 2016
Article history
Received:
July 17, 2016
Revised:
August 25, 2016
Citation
Singh, V., Axelsson, L., and Visser, W. (November 22, 2016). "Transient Performance Analysis of an Industrial Gas Turbine Operating on Low-Calorific Fuels." ASME. J. Eng. Gas Turbines Power. May 2017; 139(5): 051401. https://doi.org/10.1115/1.4034942
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