Preliminary study has shown that the flue gas recirculation (FGR) is one of the effective ways to reduce the nitric oxides () emission in industrial furnaces. The sensitivity of the emission from a FGR industrial furnace to the change in three major furnace input variables—inlet combustion air mass flow rate, inlet combustion air temperature, and pressure head of the FGR fan—is investigated numerically in this study. The investigation is carried out in frequency domain by superimposing sinusoidal signals of different frequencies on to the furnace control inputs around the design operating condition, and observing the frequency responses. The results obtained in this study can be used in the design of active combustion control systems to reduce emission. The numerical simulation of the turbulent non-premixed combustion process in the furnace is conducted using a moment closure method with the assumed probability density function for the mixture fraction. The combustion model is derived based on the assumption of instantaneous full chemical equilibrium. The discrete transfer radiation model is chosen as the radiation heat transfer model, and the weighted-sum-of-gray-gases model is used to calculate the absorption coefficient.
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June 2007
Research Papers
Sensitivity Analysis of a FGR Industrial Furnace for Emission Using Frequency Domain Method
Qing Jiang
Qing Jiang received his B.Sc. from the University of Science and Technology of China, China in 1986 and M.E.Sc. from the University of Western Ontario, London, Ontario, Canada in 2004. He is specialized in computational fluid dynamics, heat transfer, combustion, linear control model, and thermal utilization of solar energy.
Qing Jiang
Department of Mechanical and Materials Engineering,
The University of Western Ontario
, London, Ontario, Canada, N6A 5B9
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Chao Zhang
Dr. Chao Zhang is currently an associate professor in the Department of Mechanical and Materials Engineering at the University of Western Ontario, London, Ontario, Canada. She received her Ph.D. in Mechanical Engineering from the University of New Brunswick, Fredericton, New Brunswick, Canada in 1990 and joined the University of Windsor, Windsor, Ontario, Canada as a faculty member in the same year. She took up her present position in 1999. Dr. Zhang’s research interests are in the area of numerical simulations of turbulent, multiphase, and reactive flows. The main fields of her research are gas-liquid two-phase flows in condensers, turbulent reactive flows in industrial furnaces and automobile engines, and gas-solid two-phase flows in fluidized beds, powder spray systems, and pulmonary drug delivery.
Chao Zhang
Mem. ASME
Department of Mechanical and Materials Engineering,
e-mail: zhangc@engga.uwo.ca
The University of Western Ontario
, London, Ontario, Canada, N6A 5B9
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Jin Jiang
Dr. Jin Jiang received his Ph.D. in electrical engineering from the University of New Brunswick, Fredericton, New Brunswick, Canada in 1989. Currently, he is a Professor in the Department of Electrical and Computer Engineering at the University of Western Ontario, London, Ontario, Canada. He is currently the NSERC/UNENE Senior Industrial Research Chair in Control, Instrumentation and Electrical Systems for Nuclear Power Plants. His research interests are in the area of control systems, energy systems and advanced signal processing for diagnosis.
Jin Jiang
Department of Electrical and Computer Engineering,
The University of Western Ontario
, London, Ontario, Canada, N6A 5B9
Search for other works by this author on:
Qing Jiang
Qing Jiang received his B.Sc. from the University of Science and Technology of China, China in 1986 and M.E.Sc. from the University of Western Ontario, London, Ontario, Canada in 2004. He is specialized in computational fluid dynamics, heat transfer, combustion, linear control model, and thermal utilization of solar energy.
Chao Zhang
Dr. Chao Zhang is currently an associate professor in the Department of Mechanical and Materials Engineering at the University of Western Ontario, London, Ontario, Canada. She received her Ph.D. in Mechanical Engineering from the University of New Brunswick, Fredericton, New Brunswick, Canada in 1990 and joined the University of Windsor, Windsor, Ontario, Canada as a faculty member in the same year. She took up her present position in 1999. Dr. Zhang’s research interests are in the area of numerical simulations of turbulent, multiphase, and reactive flows. The main fields of her research are gas-liquid two-phase flows in condensers, turbulent reactive flows in industrial furnaces and automobile engines, and gas-solid two-phase flows in fluidized beds, powder spray systems, and pulmonary drug delivery.
Jin Jiang
Dr. Jin Jiang received his Ph.D. in electrical engineering from the University of New Brunswick, Fredericton, New Brunswick, Canada in 1989. Currently, he is a Professor in the Department of Electrical and Computer Engineering at the University of Western Ontario, London, Ontario, Canada. He is currently the NSERC/UNENE Senior Industrial Research Chair in Control, Instrumentation and Electrical Systems for Nuclear Power Plants. His research interests are in the area of control systems, energy systems and advanced signal processing for diagnosis.
J. Energy Resour. Technol. Jun 2007, 129(2): 134-143 (10 pages)
Published Online: May 21, 2005
Article history
Received:
August 19, 2003
Revised:
May 21, 2005
