Radiation Properties of Coal Char Particles Cloud

摘要

The heat transfer problem in furnaces is significantly important issue for precise design of the furnaces. In this study, the thermal radiation properties were studied for a cloud of coal char particles by using an FT-IR. In this paper, radiation properties were evaluated by the term of the extinction efficiency of char particles screened in the mesh #-280+440. The extinction efficiency in the wavelength region of 0.7 to 2.2 μm was proportional to unburnt carbon content.