【摘要】 对利用光电技术测量烟道粉尘浓度的方法进行了研究。在 Mie散射理论的基础上 ,对粉尘粒子直径不同条件下粉尘浓度进行了详细的分析 ,推导出了浓度计算公式 ,并通过计算机模拟的方法绘制出透过率—浓度关系曲线 ,讨论了影响测量精度的几个问题并提出解决的办法。更多还原

【Abstract】 A method using photoelectric technology for measuring the concentration of powder in the flue is presented in this paper The structure and the principle of operation of the photoelectric measuring instrument are introduced On the basis of Mie scattering theory,the concentration of powder with different diameters is analyzed in detail and the formula of the concentration of powder is derived The relation curve between concentration and transmissivity is drawn by means of computer simulation Some problems which effect the measuring accuracy are discussed and solved更多还原