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首页> 外文期刊>Applied optics >COMPARISON OF COHERENT ANTI-STOKES RAMAN-SCATTERING THERMOMETRY WITH THERMOCOUPLE MEASUREMENTS AND MODEL PREDICTIONS IN BOTH NATURAL-GAS AND COAL-DUST FLAMES
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COMPARISON OF COHERENT ANTI-STOKES RAMAN-SCATTERING THERMOMETRY WITH THERMOCOUPLE MEASUREMENTS AND MODEL PREDICTIONS IN BOTH NATURAL-GAS AND COAL-DUST FLAMES

机译：天然气和煤尘火焰中相干抗斯托克斯散射拉曼热度与热测量和模型预测的比较

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摘要

Mobile coherent anti-Stokes Raman-scattering equipment was applied for single-shot temperature measurements in a pilot-scale furnace with a thermal power of 300 kW, fueled with either natural gas or coal dust. Average temperatures deduced from N-2 coherent anti-Stokes Raman-scattering spectra were compared with thermocouple readings for identical flame conditions. There were evident differences between the results of both techniques, mainly in the case of the natural-gas flame. For the coal-dust flame, a strong influence of an incoherent and a coherent background, which led to remarkable changes in the spectral shape of the N-2 and-branch spectra, was observed. Therefore an algorithm had to be developed to correct the coal-dust flame spectra before evaluation. The measured temperature profiles at two different planes in the furnace were compared with model calculations. [References: 23]
机译：移动相干反斯托克斯拉曼散射设备用于中火炉的单次温度测量，火炉功率为300 kW，以天然气或煤粉为燃料。从N-2相干反斯托克斯拉曼散射光谱得出的平均温度与相同火焰条件下的热电偶读数进行了比较。两种技术的结果之间存在明显差异，主要是在天然气火焰方面。对于煤尘火焰，观察到非相干和相干背景的强烈影响，这导致N-2光谱形状和分支光谱发生了显着变化。因此，在评估之前必须开发一种算法来校正煤尘火焰光谱。将炉中两个不同平面上测得的温度曲线与模型计算进行了比较。 [参考：23]

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