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Proceedings of Symposium on Energy Engineering in the 21<sup>st</sup> Century (SEE2000) Volume I-IV

ISSN:
1-56700-132-7 (Print)

SECTION TEMPERATURE FIELD RECONSTRUCTION FROM FLAME IMAGES USING ALGEBRAIC RECONSTRUCTION TECHNIQUE

Fei Wang
Department of Energy Engineering Zhejiang University, P.R. China

Yong Chi
Department of Energy Engineering Zhejiang University, P.R. China

Chengye Wei
Department of Energy Engineering Zhejiang University, P.R. China

Zengyi Ma
Department of Energy Engineering Zhejiang University, P.R. China

JianHua Yan
Department of Energy Engineering Zhejiang University, P.R. China

Gang Hu
Department of Energy Engineering Zhejiang University, P.R. China

Kefa Cen
State Key Laboratory of Clean Energy Utilization, Institute of Thermal Power Engineering, Zhejiang University, Hangzhou 310027

Abstract

In the study of measurement for the flame temperature field, using the method of image processing, how to reconstruct three-dimensional temperature field from two-dimensional accumulative images of the flame is very important. In this paper, combining with the principles of sector scanning Computer Tomography (CT) and flame radiant transfer equation, the controlling equation of the radiation intensity which decay with projective paths is deduced. After dividing a flame section into M × N grids, temperature and radiant extinction coefficient distribution be solved by iterations to discrete equations simultaneously using Algebraic Reconstruction Technique (ART). Experiment research is proceeding using this method on a burner mixed coal and oil, possible error and improvable direction is also discussed.