Fast infrared imaging for combustion stability analysis of industrial burners

Date

2012-11-01

Author

Allouis, Christophe Gerard
Pagliara, R.
Saponaro, A.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

25
views

0
downloads

In this paper, a new diagnostic tool is tested to spatially characterize combustion fluctuations. This tool based on fast infrared imaging of flames was applied on two different types of gas turbine burners and, on two traditional industrial burners varying the fluid dynamic conditions. Both gas turbine burners evidenced oscillations at low frequencies around 25 Hz, 100 Hz and at higher frequencies up to several kHz. Typical frequencies bias toward combustion were identified. The investigations also evidenced that the typical frequencies shift up while increasing Air-Fuel ratio. The technique allowed identifying these high frequencies in the 2D dimensions. The extension of the technique to a practical Lean Premixed gas turbine gave good results either for frequency analysis of fluctuations, either for the location of the phenomenon of humming. Regarding to industrial boiler combustion the technique allowed to identify on both gas and coal combustion the proper location of the flame root and to identify the best performance in term of stability. (c) 2012 Elsevier Inc. All rights reserved.

URI

https://hdl.handle.net/11511/89871

Journal

EXPERIMENTAL THERMAL AND FLUID SCIENCE

DOI

https://doi.org/10.1016/j.expthermflusci.2012.04.014

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Turn to Turn Fault Diagnosis for Induction Machines Based on Wavelet Transformation and BP Neural Network Najafi, Atabak; Iskender, Iris; Farhadi, Pavam; Najafi, Babak (2011-09-10) Based upon Wavelet Transformation analysis and BP neural network, a method for the fault diagnosis of stator winding is proposed in this paper. Firstly wavelet transformation was used to decompose vibration time signal of stator to extract the characteristic values - wavelet transformation energy, and features were input in to the BP NN. After training the BP NN could be used to identify the stator winding fault (Turn to Turn fault) patterns. Three typical turn to turn faults as 10 turn, 20 turn and 35 turn...
Fast cell determination of the DSMC molecules in multi-stage turbo molecular pump design Sengil, N.; Edis, Fırat Oğuz (Elsevier BV, 2011-06-01) In this study, an existing 2D parallel DSMC solver is modified, to analyze the multi-stage turbomolecular pumps more efficiently. Generally, molecule movements are traced cell-by-cell in DSMC solvers both in structured and unstructured meshes in order to determine which cell the DSMC molecule is positioned in. These calculations require time consuming trigonometric operations. If a nonrectangular physical domain can be converted into a rectangular computational domain using curvilinear coordinates, then it ...
Low-cost motor drive-embedded fault diagnosis a simple harmonic analyzer AKIN, Bilal; TOLIYAT, Hamid A.; Orguner, Umut; RAYNER, Mark (2007-03-01) The reference frame theory and its applications to fault diagnosis of electric machinery as a powerful tool to find the magnitude and phase quantities of fault signatures are explored in this paper. The core idea is to convert the associated fault signature to a dc quantity, followed by calculating the signal average value in the new reference frame to filter out the rest of the signal harmonics, i. e. its ac components. Broken rotor bar and rotor eccentricity faults are experimentally tested both offline u...
High-frequency loss calculation in a smooth rotor induction motor using FEM Ertan, Hulusi Bülent; Leblebicioğlu, Mehmet Kemal (2007-09-01) In this paper, a new approach for the calculation of high-frequency losses in induction motors is presented. The input to the motors is assumed to be supplied from a sinusoidal voltage source. The method is based on the two-dimensional (2-D)). field solutions of the magnetic circuit, obtained by using a nonlinear "harmonic" solution. Hence, the solution time is very short. From the "harmonic" solution, the air-gap field distribution as well as the fundamental frequency eddy current losses are determined. Th...
Quantum chemical simulation of nitric oxide reduction by ammonia (scr reaction) on v2o5 / tio2 catalyst surface Soyer, Sezen; Önal, Işıl; Department of Chemical Engineering (2005) The reaction mechanism for the selective catalytic reduction (SCR) of nitric oxide by ammonia on (010) V2O5 surface represented by a V2O9H8 cluster was simulated by density functional theory (DFT) calculations. The computations indicated that SCR reaction consisted of three main parts. In the first part ammonia activation on Brønsted acidic V-OH site as NH4+ species by a nonactivated process takes place. The second part includes the interaction of NO with pre-adsorbed NH4 + species to eventually form nitros...

Citation Formats

C. G. Allouis, R. Pagliara, and A. Saponaro, “Fast infrared imaging for combustion stability analysis of industrial burners,” EXPERIMENTAL THERMAL AND FLUID SCIENCE, pp. 2–8, 2012, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/89871.