原子特征谱线对法测量火焰温度的温标元素研究  

THE STUDY OF ELEMENTS USED FOR TEMPERATURE MEASUREMENT WITH THE ATOMIC SPECTRAL LINES

作　　者：陈晓斌[1] 蔡小舒[1] 范学良[1] 沈嘉祺[1] 

机构地区：[1]上海理工大学动力学院,上海200093

出　　处：《工程热物理学报》2009年第3期525-528,共4页Journal of Engineering Thermophysics

基　　金：国家973项目(No.2004CB217706-03);国家973项目(No.2004CB217703)

摘　　要：研究发现煤炭、木材、汽油、柴油等燃料的火焰光谱中都存在Na(589.5,589.9 nm)和K(766.5,769.9 nm)特征辐射谱线对,谱线对的相对强度比与温度有关,由此可以测量火焰温度。本文介绍了测量原理和方法,对K、Na、Fe、Zn作为温标元素时的误差传递进行了分析,得出K、Na作为温标元素时误差传递大,测量精度低;Fe、Zn作为温标元素时误差传递小,测量精度高。The pairs of atomic emission spectral lines of Sodium （589.5 nm, 589.9 nm） and Potassium （766.5 nm, 769.9 nm ） exist in the flames of coal, wood, gasoline, diesel, etc. The ratio of the relative intensities of the spectral lines relies on the temperature. This paper presents a method for flame temperature measurement by measuring the intensity ratio of the emission spectral lines. By analysing the error transfer, it was found that the accuracy is relatively low when using the emission lines of potassium or sodium for pyrometry while the accuracy is relatively high when using those of iron or zinc.

关 键 词：火焰温度 原子光谱 测量 

分 类 号：TK124[动力工程及工程热物理—工程热物理]