Experimental Study on the Atomization Behavior of Fuel Nozzle of Low Pollution

2011 ◽  
Vol 66-68 ◽  
pp. 307-310
Author(s):  
Xu Li ◽  
Kai Liu
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Combustion Efficiency ◽  
Outlet Temperature ◽  
Design Development ◽  
Heavy Duty ◽  
Group Design ◽  
Fuel Nozzle ◽  
Heavy Duty Gas Turbine ◽  
Reliable Basis

Experimental investigation results of the fuel nozzle group in a heavy-duty gas turbine are presented. Atomization characteristic has great impact about combustion efficiency, ignition performance, and outlet temperature field of combustor. Obtained atomization characteristic about spray particle size and distribution using LDV/PDPA system. These experimental data have provided reliable basis for the nozzle group design, development and operation.

Research of the Atomization Characteristics of Low Pollution Air Blast Nozzle

2013 ◽  
Vol 655-657 ◽  
pp. 133-136
Author(s):  
Kai Liu
Keyword(s):  
Particle Size ◽  
Cone Angle ◽  
Combustion Efficiency ◽  
Outlet Temperature ◽  
Design Development ◽  
Spray Cone Angle ◽  
Spray Cone ◽  
Group Design ◽  
Atomization Characteristics ◽  
Reliable Basis

Atomization characteristic has great impact about combustion efficiency, ignition performance, and outlet temperature field of combustor. Obtained atomization characteristic about spray particle size and spray cone angle using LDV/PDPA system and the relevant software. The results indicated: particle size decrease rapidly with increasing air and tends to stabilize, Spray cone angle does not change with the air pressure. These experimental data have provided reliable basis for the nozzle group design, development and operation.

Experimental Study on Pollution Emissions of the DLN Combustor

2011 ◽  
Vol 138-139 ◽  
pp. 958-961
Author(s):  
Xu Li ◽  
Kai Liu
Keyword(s):  
Experimental Study ◽  
Gas Turbine ◽  
Combustion Efficiency ◽  
Test System ◽  
Heavy Duty ◽  
Pressure Test ◽  
Design Requirements ◽  
Heavy Duty Gas Turbine ◽  
Pollution Emissions ◽  
Reliable Basis

Experimental study of combustor of heavy-duty gas turbine (E) which is the first independent intellectual property rights has been finished on high-pressure test system by China Gas Turbine Establishment of AVIVI. The content of CO and UHC are very low, the combustion is stable and efficient, the combustion efficiency is over 99%; pollution emissions (NOx) are 225mg/m3 (15%O2) under rated condition, which is not meet the design requirements. The results indicated: The radio of on-watch-fuel is large, which makes the content of NOx is large; uneven premixed fuel is another important reason that makes the content of NOx is large. The conclusion has provided the reliable basis for gas turbine’s design and development.

Experimental Study on Atomization Characteristic of Fuel Injector of Heavy-Duty Gas Turbine

2011 ◽  
Vol 354-355 ◽  
pp. 488-491
Author(s):  
Kai Liu ◽  
Bao Cheng Zhang ◽  
Hong An Ma
Keyword(s):  
Experimental Data ◽  
Gas Turbine ◽  
Test Methods ◽  
Spray Angle ◽  
Fuel Injector ◽  
Heavy Duty ◽  
Group Design ◽  
Design Requirements ◽  
Heavy Duty Gas Turbine ◽  
Reliable Basis

Experimental investigation results of the fuel injector group in a heavy-duty gas turbine are presented. Atomization characteristic has great impact about combustion, inflame, temperature field of outlet. Obtained atomization characteristic about spray particle size and spray angle using LDV/PDPA system, determined dimension of injector group. On the basis of these tests, the combustion testing of the injector group in the flame tube is made, its every targets are arrived in the design requirements. This has demonstrated: the test systems and test methods are practical, feasible and reliable. These experimental data have provided the reliable basis for the injector group design and development.

Experimental Study of Atomization Characteristic of Air Blast Atomizer

2013 ◽  
Vol 300-301 ◽  
pp. 185-188 ◽  
Author(s):  
Kai Liu ◽  
Li Yan Sun
Keyword(s):  
Experimental Data ◽  
Test Methods ◽  
Spray Angle ◽  
Fuel Injector ◽  
Heavy Duty ◽  
Air Blast ◽  
Group Design ◽  
Design Requirements ◽  
Heavy Duty Gas Turbine ◽  
Reliable Basis

Experimental investigation results of the fuel injector group in a heavy-duty gas turbine are presented. Atomization characteristic has great impact about combustion, inflame, temperature field of outlet. Obtained atomization characteristic about spray particle size and spray angle using LDV/PDPA system, determined dimension of injector group. On the basis of these tests, the combustion testing of the injector group in the flame tube is made, its every targets are arrived in the design requirements. This has demonstrated: the test systems and test methods are practical, feasible and reliable. These experimental data have provided the reliable basis for the injector group design and development.

Study on Combustor Outlet Temperature Field of Gas Turbine

2011 ◽  
Vol 138-139 ◽  
pp. 962-966 ◽  
Author(s):  
Kai Liu ◽  
Li Xu
Keyword(s):  
Experimental Study ◽  
Temperature Field ◽  
Gas Turbine ◽  
Reference Value ◽  
Test System ◽  
Outlet Temperature ◽  
Test Results ◽  
Heavy Duty ◽  
Pressure Test ◽  
Heavy Duty Gas Turbine

Experimental study on combustor outlet temperature field of heavy-duty gas turbine had been finished on high-pressure test system. Experimental results indicate: The OTDF is sensitive to diameter of dilution holes, and the RTDF is sensitive to location of dilution holes. The test results have important guiding significance and reference value to design, commission and working about the similar combustor.

Experimental Study on Combustor Outlet Temperature Field of Gas Turbine

2013 ◽  
Vol 300-301 ◽  
pp. 104-107
Author(s):  
Kai Liu
Keyword(s):  
Experimental Study ◽  
Temperature Field ◽  
Gas Turbine ◽  
Reference Value ◽  
Test System ◽  
Outlet Temperature ◽  
Test Results ◽  
Heavy Duty ◽  
Pressure Test ◽  
Heavy Duty Gas Turbine

Experimental study on combustor outlet temperature field of heavy-duty gas turbine had been finished on high-pressure test system. Experimental results indicate: The OTDF is sensitive to diameter of dilution holes, and the RTDF is sensitive to location of dilution holes. The test results have important guiding significance and reference value to design, commission and working about the similar combustor.

Design Improvement Survey for NOx Emissions Reduction of a Heavy-Duty Gas Turbine Partially Premixed Fuel Nozzle Operating With Natural Gas: Experimental Campaign

2015 ◽  
Author(s):  
Matteo Cerutti ◽  
Roberto Modi ◽  
Danielle Kalitan ◽  
Kapil K. Singh
Keyword(s):  
Pressure Drop ◽  
Natural Gas ◽  
Gas Turbine ◽  
Pollutant Emissions ◽  
Nox Emissions ◽  
Heavy Duty ◽  
Fuel Nozzle ◽  
Partially Premixed ◽  
Heavy Duty Gas Turbine ◽  
The Impact

As government regulations become increasingly strict with regards to combustion pollutant emissions, new gas turbine combustor designs must produce lower NOx while also maintaining acceptable combustor operability. The design and implementation of an efficient fuel/air premixer is paramount to achieving low emissions. Options for improving the design of a natural gas fired heavy-duty gas turbine partially premixed fuel nozzle have been considered in the current study. In particular, the study focused on fuel injection and pilot/main interaction at high pressure and high inlet temperature. NOx emissions results have been reported and analyzed for a baseline nozzle first. Available experience is shared in this paper in the form of a NOx correlative model, giving evidence of the consistency of current results with past campaigns. Subsequently, new fuel nozzle premixer designs have been investigated and compared, mainly in terms of NOx emissions performance. The operating range of investigation has been preliminarily checked by means of a flame stability assessment. Adequate margin to lean blow out and thermo-acoustic instabilities onset has been found while also maintaining acceptable CO emissions. NOx emission data were collected over a variety of fuel/air ratios and pilot/main splits for all the fuel nozzle configurations. Results clearly indicated the most effective design option in reducing NOx. In addition, the impact of each design modification has been quantified and the baseline correlative NOx emissions model calibrated to describe the new fuel nozzles behavior. Effect of inlet air pressure has been evaluated and included in the models, allowing the extensive use of less costly reduced pressure test campaigns hereafter. Although the observed effect of combustor pressure drop on NOx is not dominant for this particular fuel nozzle, sensitivity has been performed to consolidate gathered experience and to make the model able to evaluate even small design changes affecting pressure drop.

Design Improvement Survey for NOx Emissions Reduction of a Heavy-Duty Gas Turbine Partially Premixed Fuel Nozzle Operating With Natural Gas: Numerical Assessment

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Alessandro Innocenti ◽  
Antonio Andreini ◽  
Bruno Facchini ◽  
Matteo Cerutti ◽  
Gianni Ceccherini ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Turbulent Combustion ◽  
Operating Conditions ◽  
Combustion Model ◽  
Formation Mechanisms ◽  
Heavy Duty ◽  
Flamelet Generated Manifold ◽  
Fuel Nozzle ◽  
Partially Premixed ◽  
Heavy Duty Gas Turbine

A numerical investigation of a low NOx partially premixed fuel nozzle for heavy-duty gas turbine applications is presented in this paper. Availability of results from a recent test campaign on the same fuel nozzle architecture allowed the exhaustive comparison study presented in this work. At first, an assessment of the turbulent combustion model was carried out, with a critical investigation of the expected turbulent combustion regimes in the system and taking into account the partially premixed nature of the flame due to the presence of diffusion type pilot flames. In particular, the fluent partially premixed combustion model and a flamelet approach are used to simulate the flame. The laminar flamelet database is generated using the flamelet generated manifold (FGM) chemistry reduction technique. Species and temperature are parameterized by mixture fraction and progress variable. Comparisons with calculations with partially premixed model and the steady diffusion flamelet (SDF) database are made for the baseline configuration in order to discuss possible gains associated with the introduced dimension in the FGM database (reaction progress), which makes it possible to account for nonequilibrium effects. Numerical characterization of the baseline nozzle has been carried out in terms of NOx. Computed values for both the baseline and some alternative premixer designs have been then compared with experimental measurements on the reactive test rig at different operating conditions and different split ratios between main and pilot fuel. Numerical results allowed pointing out the fundamental NOx formation processes, both in terms of spatial distribution within the flame and in terms of different formation mechanisms. The obtained knowledge would allow further improvement of fuel nozzle design.

Integrated Experimental and Numerical Approach for Fuel-Air Mixing Prediction in a Heavy-Duty Gas Turbine LP Burner

2000 ◽  
Vol 123 (4) ◽  
pp. 803-809 ◽  
Author(s):  
G. Mori ◽  
S. Razore ◽  
M. Ubaldi ◽  
P. Zunino
Keyword(s):  
Experimental Data ◽  
Gas Turbine ◽  
Numerical Procedure ◽  
Turbulence Models ◽  
Mie Scattering ◽  
Optical Measurements ◽  
Heavy Duty ◽  
Experimental Apparatus ◽  
Air Mixing ◽  
Heavy Duty Gas Turbine

An integrated experimental-numerical procedure has been developed for fuel-air mixing prediction in a heavy-duty gas turbine burner. Optical measurements of the degree of mixing have been performed in a full-scale test rig operating with cold flow. Experimental data have been utilized to validate a CFD RANS numerical model. In fact, it is recognized that the turbulence behavior of jets in swirling air-flow stream is not accurately described by standard k-ε turbulence models; therefore advanced turbulence models have been assessed by means of experimental data. The degree of mixing between simulated fuel and air streams has been evaluated at the burner exit section by means of a planar Mie scattering technique. The experimental apparatus consists of a pulsed Nd:YAG laser and a high resolution CCD video camera connected to a frame grabber. The acquired instantaneous images have been processed through specific procedures that also take into account the laser beam spatial nonuniformity. A second-order discretization scheme with a RSM turbulence model gives the best accordance with the experimental data. Such CFD model will be part of a more general method addressed to numerical prediction of turbulent combustion flames in LP technology.

Operating Experience in Refinery Application of the 13MW-Class Heavy Duty MF-111 Gas Turbine Engine

1990 ◽  
Author(s):  
J. Masada ◽  
I. Fukue
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Operating Experience ◽  
Combined Cycle ◽  
Outlet Temperature ◽  
Heavy Duty ◽  
Turbine Engine ◽  
Industrial Gas Turbines ◽  
Heavy Duty Gas Turbine ◽  
Temperature Levels

A new, 13MW class, heavy duty gas turbine, the “MF-111” was developed for use as a prime mover for cogeneration, combined cycle and repowering applications. The use of such equipment in refineries presents special challenges as regards the combustion of nonstandard fuels, tolerance of industrial environments, and accomodation of site-specific design requirements. Such circumstances add substantially to the tasks of proving and adjusting the design of a new gas turbine, meeting stringent emissions requirements and introducing to the world of industrial gas turbines the benefits of F-class (1250°C burner outlet temperature) levels of thermodynamic performance. This paper describes how these challenges have successfully been met during the three calendar years and ten machine-years of MF-111 refinery-application experience accumulated to-late.

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