Photoelectric inequivalence characteristics of an electric substitution radiative heat flux meter

YE Xin; ZHENG Xiangyuan; LUO Zhitao

doi:10.37188/OPE.20233120.2943

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Photoelectric inequivalence characteristics of an electric substitution radiative heat flux meter

Modern Applied Optics | 更新时间：2023-11-27

- Photoelectric inequivalence characteristics of an electric substitution radiative heat flux meter
- Optics and Precision Engineering Vol. 31, Issue 20, Pages: 2943-2950(2023)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所，吉林长春 130033
  2.中国科学院大学，北京 100049
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20233120.2943
  CLC：
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叶新,郑翔远,罗志涛.电替代式辐射热流计光电不等效特性[J].光学精密工程,2023,31(20):2943-2950.

YE Xin,ZHENG Xiangyuan,LUO Zhitao.Photoelectric inequivalence characteristics of an electric substitution radiative heat flux meter[J].Optics and Precision Engineering,2023,31(20):2943-2950.
叶新,郑翔远,罗志涛.电替代式辐射热流计光电不等效特性[J].光学精密工程,2023,31(20):2943-2950. DOI： 10.37188/OPE.20233120.2943.

YE Xin,ZHENG Xiangyuan,LUO Zhitao.Photoelectric inequivalence characteristics of an electric substitution radiative heat flux meter[J].Optics and Precision Engineering,2023,31(20):2943-2950. DOI： 10.37188/OPE.20233120.2943.

摘要

非真空环境下，基于电替代测量原理的辐射热流计存在光电不等性来源复杂、难以开展实验测试修正等问题。为了进一步提高辐射热流计的测量准确度，首先分析辐射热流计光电不等效来源，其次结合传热学理论和限元分析法建立辐射热流计热结构模型，并以真空-空气比对实验验证有限元模型的有效性，最后基于有限元热结构模型对传热过程的不等效性进行修正。有限元模型的真空-空气响应度测试结果与实验测试结果相差1.7%，传热时存在的不等效为0.28%。光电不等效修正系数为1.002 35，相对不确定度为0.29%。通过上述方法完善了辐射热流计的修正体系，提高测量准确度，并为其优化改进提供指导性建议。

Abstract

In non-vacuum environments， radiation heat flux meters based on the electric substitution measurement principle face challenges such as intricate photoelectric inequality and hurdles in experimental testing and correction. To enhance the meter's accuracy， the photoelectric inequivalence source of the radiant heat flow meter was first analyzed. Subsequently， a thermal structure model for the radiant heat flow meter was developed by combining heat transfer theory with finite element analysis. The model's validity was then ascertained via a vacuum-to-air ratio experiment. Using this finite element thermal structure model， adjustments were made to address the inequivalence in the heat transfer process. The difference between the test results of vacuum-air responsiveness of the finite element model and experimental results is 1.7%， and the inequivalence of heat transfer is 0.28%. The photoelectric inequivalent correction coefficient is 1.002 35， and the relative uncertainty is 0.29%. Hence， this approach refines the radiant heat flux meter's correction system， improves its measurement accuracy， and furnishes valuable recommendations for further optimization and enhancement.

关键词

高精度电替代热流密度光电不等效性

Keywords

high precisionelectric substitutionheat fluxphotoelectric inequivalence

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Institute of Microelectronics of the Chinese Academy of Sciences

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Institute of Oceanographic Instrumentation， Qilu University of Technology （Shandong Academy of Sciences）

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Innovation Academy for Precision Measurement Science and Technology， Chinese Academy of Sciences

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