| Energy Engineering and Environmental Engineering |
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| System based on Cassegrain optical principle applicable to measure chemiluminescence in flame |
| HONG Ying-jie, WANG Gen-juan, WANG Ming-xiao, WANG Wei-hao, DENG Kai |
Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
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Abstract A non-contact system based on Cassegrain optical principle was developed in order to expend the test method of radical species in flames. The system can detect chemiluminescence of local combustion reactions and obtain continuous signals. It is very suitable to acquire dynamic signals on a point. The effective light-collection volume was experimentally investigated by sending visible light through the device in the reverse direction. The effective light-collection volume’s diameter is only 0.382 mm and its length is 1.628 mm. OH-radical and CH-radical chemiluminescence in CH4/Air premixed flame were monitored in order to demonstrate the performance of the system. The experimental results show that the system has high spatial resolution and is practicable in the study of flame．
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Published: 01 May 2017
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Cite this article:
HONG Ying-jie, WANG Gen-juan, WANG Ming-xiao, WANG Wei-hao, DENG Kai. System based on Cassegrain optical principle applicable to measure chemiluminescence in flame. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(5): 1044-1050.
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基于卡塞格林原理的火焰自由基测量系统
为了拓展火焰自由基荧光强度的测试方法,基于卡塞格林光学原理设计火焰非接触式定点测量系统,该系统可以实现对火焰自由基荧光强度的三维局部定点测量,具有定点聚焦及动态信号采集的功能.利用逆光路原理对自行设计的卡塞格林光线定点采集装置的聚焦功能进行验证,实验结果表明,该装置可以采集直径为0.382 mm,长为1.628 mm区域内的光线,具有三维高空间分辨率.基于甲烷部分预混火焰的OH基、CH基的光强随半径方向的分布数据分析,证明卡塞格林光线定点采集装置在火焰自由基荧光强度中定点测量的有效性与高空间分辨率特性.
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