Numerical Analysis of Effect of Preheat and Swirl of Inlet Air on Temperature Profile in Canister Burner
DOI:
https://doi.org/10.11113/jt.v72.3910Keywords:
Swirl combustion, can combustor, inlet air preheat, CFD simulationAbstract
The main purpose of this paper is to study the Computational Fluid Dynamics (CFD) prediction on temperature distribution inside the canister burner with inlet air pre-heating of 100K and 250K while varying the swirl angle of the radial swirler. Air swirler adds sufficient swirling to the inlet flow to generate central recirculation region (CRZ) which is necessary for flame stability and fuel air mixing enhancement. Therefore, designing an appropriate air swirler is a challenge to produce stable, efficient and low emission combustion with low pressure losses. A liquid fuel burner system with different radial air swirler with 280 mm inside diameter combustor of 1000 mm length has been investigated. Analysis were carried out using four different radial air swirlers having 30°, 40°, 50° and 60° vane angles. The flow behavior was investigated numerically using CFD solver Ansys Fluent. This study has provided characteristic insight into the distribution of temperature inside the combustion chamber. Results show that with the inlet air preheat before the combustion, the temperature distribution inside the canister would stabilize early into the chamber with higher swirl number (SN) compared without inlet air preheat. As for the inlet air preheat, the main effects are the resulting temperatures in the canister are higher, but there is a smaller hot-spot in the flame. This means that the temperature profile in the chamber is well distributed.
References
Mathur, D. L. 1974. A New Design of Vanes for Swirl Generation. IE (I) Journal Me. 55: 93–96.
Jaafar, M. N. M., Ishak, M. S. A., Saharin, S. 2010. Removal of NOx and CO from a Burner System. Environmental Science and Technology. 44 (8): 3111–3115.
Fricker, N. and Leuckel, W. 1976. The Characteristic of Swirl Stabilized Natural Gas Flame Part 3: The Effect of Swirl and Burner Mouth Geometry on Flame Stability. J. Inst. Furl. 49: 152–158.
Mestre, A and Benoit, A. 1973. Combustion in Swirling Flow. 14th Symposium (International) on Combustion, The Combustion Institute. Pittersburg. 719.
Chervinskey, A. and Manheimertiment, Y. 1968. Effect of Swirl on Flame Stabilization. Israel Journal of Technology. 6( 2): 25–31.
Tian, Z. F., Witt, P. J., Schwarz, M. P., & Yang, W. 2010. Numerical Modelling of Victorian Brown Coal Combustion in a Tangentially Fired Furnace. Energy & Fuels. 24(9): 4971–4979.
Khalil, K. H., El-Mehallawy, F. M. and Moneib, H. A. 1977. Effect of Combustion Air Swirl on the Flow Pattern in a Cylindrical Oil Fired Furnace, 16th Symposium (International) on Combustion, The Combustion Institute, Pittersburg. 135–143.
Apack, G. 1974. Interaction of Gaseous Multiple Swirling Flames, Phd thesis, Department of Chemical Engineering and Fuel Technology, University of Sheffield.
Gupta, A. K., Lilley, D. G. and Syred, N. 1984. Swirl Flows. Abacus Press, Tunbridge Wells, England.
Al-Kabie, H. S. 1989. Radial Swirlers for Low Emissions Gas Turbine Combustion. University of Leeds, Dept. of Fuel & Energy: PhD.
Beer, J. M., Chigier, N. A. 1972. Combustion Aerodynamics. Applied Science Publisher, London.
Kim, Y. M., Chung, T. J. 1989. Finite- Element Analysis of Turbulent Diffusion Flames. AIAA J. 27(3): 330–339.
Versteeg, H. K., Malalasakera, W. 1995. An Introduction to Computational Fluid Dynamics, the Finite Volume Method. Longman Group Ltd.
Khalil, A. E., & Gupta, A. K. 2011. Distributed Swirl Combustion for Gas Turbine Application. Applied Energy. 88(12): 4898–4907.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
