煤粉炉内颗粒光学特性实验与数值模型  

Experimental and Numerical Study on Radiative Properties of Particles in Coal-fired Furnace

作　　者：邢华伟[1] 邓先和[1] 郑楚光[2] 柳朝晖[2] 

机构地区：[1]华南理工大学传热强化与过程节能教育部重点实验室,广州510640 [2]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《燃烧科学与技术》2002年第1期34-37,共4页Journal of Combustion Science and Technology

基　　金：华南理工大学自然科学基金资助项目 (32 2 - E51 360 )

摘　　要：采用 KBr压片吸收谱法对钙基矿物质、炭与飞灰的光学特性进行了实验测定 ,通过 Mie理论分析了钙基矿物质的辐射特性 ,并分别基于 Mie理论、包覆球体模型及等效光学常数理论 ,结合未燃尽炭的结构模型建立了三种辐射特性计算模型 ,对不同程度的未燃尽炭的辐射参量进行了计算 ,并与实验测得的未燃尽炭的辐射特性进行了对比 ,对三种模型的准确性进行了评判。The KBr press slice was used to study the optical properties of calcic group minerals, char and fly ash in experiments. The radiative properties of calcic group minerals are analyzed by the Mie theory. At the same time three kinds of radiative computational models of unburned char were constructed according to its structural model based on the Mie theory, ash-coated model and equivalent optical constant theory, and the radiative parameters of different unburned chars were calculate. The results were verified in experiments.

关 键 词：钙基矿物质 未燃尽炭 光学特性 数值模型 煤粉炉 包覆球体模型 KBr压片吸收谱 辐射特性 MIE理论 

分 类 号：TK227.3[动力工程及工程热物理—动力机械及工程]