Experimental Study of Low Swirl Burners Interferences

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Shahsavari, Mohammad | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41579 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Farshchi, Mohammad
Abstract:
One of the problems associated with lean premixed combustion is their stability. Low swirl flame is a modern technology for reducing NOx emissions and increasing stability.In this thesis, first, the effect of geometric parameters on the flame stability was investigated. This study was carried out in high fuel and oxidizer mixture flow rate. Having find, the most stable burner, two other burners with the same geometrical parameters were built. Stability of these three burners were analyzed. Second, they were located in a ring together in three different relative positions. In each configuration stability and NOx emissions of the burners were determined.The study shows that NOx and CO emissions values are increased by increase of equivalence ratio and reduced by increase of the flow rate. Moreover, it shows that different burners configurations do not lead to change in stability, but while the distance between burners is increased, NOx and CO emissions values will be increased and reduced, respectively.
Keywords:
Lean Permixed Combustion ; Low Swirl Burner ; Low Swirl Flame Interference

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