Abstract
The flow, combustion and emission characteristics of nontraditional ring-fired-type furnaces were investigated numerically to evaluate the effects of incorporating additional inner water walls on the heat transfer, carbon burnout and emissions of nitrogen oxides. Both tangentially and ring-fired-type furnaces were considered and the ring-fired-type furnaces were divided into four inner-water-wall cases: without, normal type, radiant expended type and both radiant and convective expended type. The presence of the inner water wall led to an improvement of approximately 50% in the heat flux. In particular, the reduction in nitrogen oxide emissions was approximately 30%, whereas the carbon burnout was kept constant.
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Recommended by Associate Editor Jeong Park
Yonmo Sung received his Ph.D. in Mechanical Engineering from Pusan National University in 2014. He is particularly interested in optical measurements of multi-phase reacting flows. Dr. Sung is currently an academic visitor at Imperial College London in UK.
Gyungmin Choi received his Ph.D. in Mechanical Engineering from Pusan National University in 1997 and from Osaka University in 2002. Dr. Choi is a professor in School of Mechanical Engineering, Pusan National University, Busan, Korea.
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Sung, Y., Choi, C., Moon, C. et al. Nitric oxide emissions and combustion performance of nontraditional ring-fired boilers with furnace geometries. J Mech Sci Technol 29, 3489–3499 (2015). https://doi.org/10.1007/s12206-015-0747-0
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DOI: https://doi.org/10.1007/s12206-015-0747-0