Accuracy improvement for directional polarized spectral emissivity measurement in the wavelength range of 4?20?m

Li Longfei; Yu Kun; Zhang Kaihua; Liu Yanlei; Zhang Feng; Liu Yufang

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Accuracy improvement for directional polarized spectral emissivity measurement in the wavelength range of 4?20?m

机译：方向极化光谱发射率测量的准确性改进在4？20？M的波长范围内测量

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摘要

A new directional polarized spectral emissivity measurement apparatus with the wavelength range of 4?20 ?m was established to promote the development of thermal radiation transfer and polarization engineering. The measurement accuracy was improved by eliminating the background radiation with a high emissive thermostatic shutter and precisely determining the sample surface temperature. An accurate expression for directional polarized spectral emissivity was obtained taking into account the multiple reflection between the sample and the chamber. The linearity of spectral response was calibrated respectively in parallel and perpendicular polarized directions. The directional polarized spectral emissivity of a high-purity SiC sample was measured in a controlled environment to validate the capability of the apparatus. The excellent agreement between the measurement result and the literature data proved the reliability of the experiment apparatus and the measurement method. The measurement uncertainty was evaluated for each experiment, and the relative uncertainty was estimated to be less than 4.1%.

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来源
《Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics》 |2021年第1期|共9页
作者
Li Longfei; Yu Kun; Zhang Kaihua; Liu Yanlei; Zhang Feng; Liu Yufang;
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作者单位

Henan Normal Univ Sch Phys Henan Key Lab Infrared Mat &

Spectrum Measures &

Xinxiang 453007 Henan Peoples R China;

Henan Normal Univ Sch Phys Henan Key Lab Infrared Mat &

Spectrum Measures &

Xinxiang 453007 Henan Peoples R China;

Henan Normal Univ Sch Phys Henan Key Lab Infrared Mat &

Spectrum Measures &

Xinxiang 453007 Henan Peoples R China;

Henan Normal Univ Sch Phys Henan Key Lab Infrared Mat &

Spectrum Measures &

Xinxiang 453007 Henan Peoples R China;

Henan Inst Technol Xinxiang 453003 Henan Peoples R China;

Henan Normal Univ Sch Phys Henan Key Lab Infrared Mat &

Spectrum Measures &

Xinxiang 453007 Henan Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
Directional polarized spectral emissivity; Measurement accuracy; Experimental apparatus; Uncertainty estimation;

机译：定向极化光谱发射率;测量精度;实验装置;不确定性估计;

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12. Directional spectral emissivity measurement system [R] . 1992

机译：定向光谱发射率测量系统

Accuracy improvement for directional polarized spectral emissivity measurement in the wavelength range of 4?20?m

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