Design Optimization of Air Injector Nozzle to Enhance Air Turbulence for Complete Combustion
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DOI: https://doi.org/10.15866/ireme.v11i10.13122
Abstract
In most boilers, solid fuels are used, which are prone to issues of partial combustion. This occurs due to various reasons such as inadequate oxygen, improper air delivery system, etc. In this work, an attempt has been made to avoid/overcome the issue of partial combustion by increasing the pressure at the end of the air delivery system without increasing the inlet pressure. Moreover, effectively increasing velocity after air exit and turbulence aids in the complete combustion of the solid fuel. Efficiency is expected to increase by up to 10-15% due to complete combustion.
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K Sampath Kumar Reddy, B. Veerabhadra Reddy, Performance of the Boiler and To Improving the Boiler Efficiency Using CFDModelling, IOSR Journal of Mechanical and Civil Engineering, Vol. 8, n. 6, pp. 25-29, 2012.
http://dx.doi.org/10.9790/1684-0862529
S. Kang, W. Cho, C. Bae, Y. Kim, Influence of the Injector Geometry at 250 MPa Injections in a Light-Duty Diesel Engine, SAE Technical Paper 2017-01-0693, 2017.
http://dx.doi.org/10.4271/2017-01-0693
A. J. Depman, Stoker boiler CFD modeling improvements through alternative heat exchanger modeling, M.S. (Master of Science) thesis, University of Iowa, 2014. http://ir.uiowa.edu/etd/4609, (2014).
N. M. Muhaisen, R. A. Hokoma, Calculating the Efficiency of Steam Boilers Based on Its Most Effecting Factors: A Case Study World Academy of Science, Engineering and Technology International Journal of Mechanical, Aerospace, Industrial, Mechatronic, and Manufacturing Engineering Vol:6, n.3, 2012.
http://dx.doi.org/10.1201/9780203910221.ax2
N. D. Deshpande, S. S. Vidwans, P. R. Mahale, R. S. Joshi, K. R. Jagtap Theoretical & CFD Analysis of De Laval Nozzle, International Journal of Mechanical And Production Engineering, Vol. 2, n. 4, pp.33-36, 2014.
http://dx.doi.org/10.1142/9789813142725_0034
R. Abdel-Gayed, D. Bradley, M. Lawes, F. Lung, Premixed turbulent burning during explosions. Proc. Combust. Inst. 1986, Vol. 21, pp.497–504, 1986.
J. Driscoll, Turbulent premixed combustion: Flamelet structure and its effects on turbulent burning velocities. Prog. Energy Combust. Sci. Vol. 34, pp. 91–134, 2008.
http://dx.doi.org/10.1016/j.pecs.2007.04.002
D. Bradley, D. How fast can we burn? Proc. Combust. Inst. Vol. 24, pp. 247–262.1993.
S. Shy, R. Jang, C. Tang,, Simulation of turbulent burning velocities using aqueous autocatalytic reactions in a near-homogeneous turbulence. Combustion Flame, Vol. 105, pp.54–62, 1996.
http://dx.doi.org/10.1016/0010-2180(95)00159-x
S. Shy, W. Lin, J. Wei, An experimental correlation of turbulent burning velocities for premixed turbulent methane-air combustion. Proc. Royal Society of London,, Vol.456, pp.1997–2019, 2000.
S. Shy, W. Lin, K. Peng, High-intensity turbulent premixed combustion: General correlations of turbulent burning velocities in a new cruciform burner. Proc. Combustion Institute Vol. 28, pp.561–568, 2000.
http://dx.doi.org/10.1016/s0082-0784(00)80256-8
M. K. Bora and S. Nakkeeran, Performance Analysis From The Efficiency Estimation of Coal Fired Boiler, International Journal of Advanced Research, Vol. 2, n. 5, pp.561-574, 2014.
V. K. Pathak, S. Gupta, Study of nozzle injector performance using CFD, International Journal of Recent advances in Mechanical Engineering (IJMECH) Vol. 4, n. 3, 2015.
http://dx.doi.org/10.14810/ijmech.2015.4312
G. Fru, D. Thevenin, and G. Janiga, Impact of Turbulence Intensity and Equivalence Ratio on the Burning Rate of Premixed Methane-Air Flames, Energies, Vol.4, pp .878-893,2011.
http://dx.doi.org/10.3390/en4060878
FLUENT user guide, ANSYS inc, (2015).
H. K. Versteeg, W. Malalasekera, An introduction to computational fluid dynamics – the finite volume method, Addison Wesley Longman Limited, ISBN 0-582-21884-5, (1995).
http://dx.doi.org/10.1007/978-3-540-85056-4_11
Ahmed, S., Nazari, A., Numerical Study of Rotating Cylinder Effects on the Performance of a Symmetrical Airfoil Section, (2015) International Review on Modelling and Simulations (IREMOS), 8 (2), pp. 239-244.
http://dx.doi.org/10.15866/iremos.v8i2.5466
Frosina, E., Buono, D., Senatore, A., Costin, I., A Simulation Methodology Applied on Hydraulic Valves for High Fluxes, (2016) International Review on Modelling and Simulations (IREMOS), 9 (3), pp. 217-226.
http://dx.doi.org/10.15866/iremos.v9i3.9612
Dragan, V., Malael, I., Gherman, B., Development of a Very High Pressure Ratio Single Stage Centrifugal Compressor, (2015) International Review on Modelling and Simulations (IREMOS), 8 (3), pp. 347-353.
http://dx.doi.org/10.15866/iremos.v8i3.6020
Salim, W., Ahmed, S., Prediction of Turbulent Swirling Flow in a Combustor Model, (2016) International Review of Aerospace Engineering (IREASE), 9 (2), pp. 43-50.
http://dx.doi.org/10.15866/irease.v9i2.9562
Bekka, N., Bessaïh, R., Sellam, M., Numerical Study of Transonic Flows Using Various Turbulence Models, (2015) International Review of Aerospace Engineering (IREASE), 8 (6), pp. 216-224.
http://dx.doi.org/10.15866/irease.v8i6.8824
Aziz, M., Elsayed, A., CFD Investigations for UAV and MAV Low Speed Airfoils Characteristics, (2015) International Review of Aerospace Engineering (IREASE), 8 (3), pp. 95-100.
http://dx.doi.org/10.15866/irease.v8i3.6212
Ahmed, S., Nazari, A., Wahba, E., Numerical Analysis of Separation Control Over an Airfoil Section, (2014) International Review of Aerospace Engineering (IREASE), 7 (2), pp. 61-68.
http://dx.doi.org/10.15866/irease.v7i2.2057
Lourencena Caldas Franke, L., Addis Valverde Salvador, C., Zero-Dimensional Model of the System: Combustion Chamber, Nozzle and Turbine for Electrical Generation, (2014) International Review of Mechanical Engineering (IREME), 8 (5), pp. 924-930.
http://dx.doi.org/10.15866/ireme.v8i5.3310
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