An Experimental Study of Steam Injection in an Aeroderivative Gas Turbine

1997 ◽  
Author(s):  
Jean-Louis Meyer ◽  
Guy Grienche
Keyword(s):  
Experimental Study ◽  
Gas Turbine ◽  
Power Plants ◽  
Steam Injection ◽  
Second Phase ◽  
Nox Emissions ◽  
Heavy Duty ◽  
Heavy Duty Gas Turbine ◽  
Two Phases ◽  
Injection Phase

The injection of steam into a gas turbine allows a reduction in nitrogen oxide (NOx) emissions and an increase in power and efficiency. In this way, and due especially to their lower investment costs, massive steam injection cycles could represent an interesting concept for intermediate-load power plants. When EDF and TURBOMECA jointly decided to carry out an experimental study of the consequences of steam injection into a gas turbine, two test phases were defined: firstly, a limited steam injection phase to assess the effect of steam on combustion, and secondly, a massive injection phase to assess the behavior and the performance capabilities of the machine. This second phase also aimed at identifying the critical points likely to appear when adapting a heavy-duty gas turbine to massive steam injection. This publication summarizes the main results of these two phases of tests.

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.

Combustion Instabilities Damping System Development for Dry Low NOx Emissions Operability Enhancement of a Heavy-Duty Gas Turbine

2019 ◽  
Author(s):  
Matteo Cerutti ◽  
Nicola Giannini ◽  
Bruno Schuermans ◽  
Riccardo Brenci ◽  
Alessandro Marini ◽  
...  
Keyword(s):  
Growth Rate ◽  
Gas Turbine ◽  
Growth Rates ◽  
Fine Tuning ◽  
Optimized Design ◽  
Nox Emissions ◽  
Preliminary Design ◽  
Heavy Duty ◽  
Wide Range ◽  
Heavy Duty Gas Turbine

Abstract This paper describes the development phases of a damping system for combustion instability reduction in an annular type combustor for heavy-duty gas turbine applications. As reported by the authors in a previous paper, the full scale annular test rig allowed for an extensive characterization of the combustor with realistic acoustic boundaries at engine-relevant conditions. Emissions and operability assessment over a wide range of load conditions was performed, allowing the evaluation of the response of the system near the thermo-acoustic instability onset. The instability is quantified by its acoustic growth rate. This quantity is a crucial input in the design process of dampers. A methodology has been used to extract these growth rates form measured pulsation data. Experimentally determined growth rates have been evaluated for different fuel flow rate split between the main and the pilot injections, providing input to dampers preliminary design. Given current combustor architecture constraints, a first attempt configuration has been proposed and performances evaluated in the full annular rig. Dampers have been equipped with dynamic sensors and thermocouples with the purpose of measuring the growth rate abatement and the consequent NOx emissions reduction. A dedicated numerical toolbox, in-house developed by GE Power, has been used for both dampers preliminary design and growth rate reduction evaluation. Fine tuning of dampers elements as well as design assumptions adjustments required additional experimental evaluations and design iterations. Encouraged by the successful test in the concept phase, an optimized design for engine implementation was defined, that featured a significant increased damper volume, involving combustor parts re-design. The optimized configuration was finally tested in full annular rig and results demonstrated an important enhancement of operability while maintaining NOx emissions below the target levels.

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.

Performance of Gas Turbine Power Plants Controlled by Multiagent Scheme

2006 ◽  
Author(s):  
Lorenzo Dambrosio ◽  
Marco Mastrovito ◽  
Sergio M. Camporeale
Keyword(s):  
Artificial Intelligence ◽  
Gas Turbine ◽  
System Approach ◽  
Power Plants ◽  
Multiagent System ◽  
Control Process ◽  
Control Algorithms ◽  
Load Reduction ◽  
Heavy Duty ◽  
Heavy Duty Gas Turbine

In latter years the idea of artificial intelligence has been focused around the concept of a rational agent. An agent is a (software or hardware) entity that can receive signals from the environment and act upon that environment through output signals. In general an agent always tries to carry out an appropriate task. Seldom agents are considered as stand-alone systems. Their main strength can be found in the interaction with other agents in several different ways in a multiagent system. In the present work, multiagent system approach will be used to manage the control process of a single-shaft heavy-duty gas turbine in Multi Input Multi Output mode. The results will show that the multiagent approach to the control problem effectively counteracts the load reduction (including the load rejection condition) with limited overshoot in the controlled variables (as other control algorithms do) while showing good level adaptivity readiness, precision, robustness and stability.

Performance of Gas Turbine Power Plants Controlled by the Multiagent Scheme

2006 ◽  
Vol 129 (3) ◽  
pp. 738-745 ◽  
Author(s):  
Lorenzo Dambrosio ◽  
Marco Mastrovito ◽  
Sergio M. Camporeale
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Multiagent System ◽  
Control Algorithms ◽  
Load Reduction ◽  
Heavy Duty ◽  
Inlet Guide Vanes ◽  
Turbine Efficiency ◽  
Power Frequency ◽  
Heavy Duty Gas Turbine

In recent years the idea of artificial intelligence has been focused around the concept of rational agent. An agent is an (software or hardware) entity that can receive signals from the environment and act upon that environment through output signals, trying to carry out an appropriate task. Seldom agents are considered as stand-alone systems; on the contrary, their main strength can be found in the interaction with other agents, constituting the so-called multiagent system. In the present work, a multiagent system was chosen as a control system of a single-shaft heavy-duty gas turbine in the multi input multi output mode. The shaft rotational speed (power frequency) and stack temperature (related to the overall gas turbine efficiency) represent the controlled variables; on the other hand, the fuel mass flow (VCE) and the variable inlet guide vanes (VIGV) have been chosen as manipulating variables. The results show that the multiagent approach to the control problem effectively counteracts the load reduction (including the load rejection condition) with limited overshoot in the controlled variables (as other control algorithms do) while showing a good level of adaptivity, readiness, precision, robustness, and stability.

scholarly journals A neuro-fuzzy controller for grid-connected heavy-duty gas turbine power plants

2017 ◽  
Vol 25 ◽  
pp. 2375-2387 ◽  
Author(s):  
Mohamed Mustafa MOHAMED IQBAL ◽  
Rayappan JOSEPH XAVIER ◽  
Jagannathan KANAKARAJ
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Fuzzy Controller ◽  
Heavy Duty ◽  
Neuro Fuzzy ◽  
Heavy Duty Gas Turbine

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 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.

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