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《Journal of Engineering for Thermal Energy and Power》 2003-05
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Simulation Study on the Visualization of One-dimensional Temperature Profiles in a Pulverized Coal-fired Boiler Furnace

LI Li, JIANG Zhi wei, LOU Chun, et al (State KeyLaboratory on Coal Combustion under the Huazhong University of Science & Technology, Wuhan, China, Post Code: 430074)  
Infrared thermal image devices currently available can only provide accumulative temperature images of a flame during the monitoring of the latter without the ability to present any information concerning the inner temperature distribution of the flame. Under certain conditions the local combustion process specific to a pulverized coal fired boiler furnace can be approximated to a one dimensional object. By using two probes for taking the picture of flame images respectively from two openings on a furnace wall and through the adoption of image processing techniques and radiation transmission principles a one dimensional temperature distribution can be reconstructed between the two probes. With respect to two kinds of typical temperature profile and by the use of two kinds of flame monitoring mode a simulation study for each kind was respectively conducted. The simulation results indicate that a good reproduction effect of the temperature profiles can be achieved if flame detectors are mounted at an appropriate picture taking angle, thus testifying to the significant usefulness of the method proposed by the authors.
【Fund】: 教育部重点科技基金资助项目(99081)
【CateGory Index】: TK31
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