不同燃烬度煤粒的光学及辐射特性的研究

THE OPTICAL AND RADIATIVE PROPERTIES OF COAL PARTICLES WITH DIFFERENT BURNED-OUT

不同燃烬度煤粒的光学及辐射特性的研究周英彪，李剑云，柳朝晖，郑楚光（华中理工大学武汉４３００７４）关键词燃烬度，光学特性，辐射特性１前言在高温煤粉炉的炉膛中，辐射是最重要的传热方式，其中最主要的辐射媒体是悬浮固体微粒，如：炭粒、飞灰、碳黑、煤粒等。分...

In pulverized-coal-fired furnaces, There are a great amount of burning coal particles with different burned-out. They are important medias for radiation heat transfer. The paper present the optical parameter of several kinds of different burned-exent of the same coal, calculated the absorption index of them. Also, using the index and MIE theory, calculated the important characteristics parameter-particle's absorption efficiency and scattering efficiency. For the measurement and numerical modelling of radiation hest transfer in combustion process, this work has practical value.