Fast Identification Method of Total Normal Surface Absorptances Using Inverse Techniques

MOHAMMED BOUSSAID; YOUNES BOULAADJOUL; MOHAMED HEDIBEL; TAHAR LOULOU

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Fast Identification Method of Total Normal Surface Absorptances Using Inverse Techniques

机译：逆向技术快速识别总法向表面吸收率

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This paper proposes a simple and fast method to identify the normal absorptance of various surfaces submitted to a radiation source, using inverse techniques. The method consists of imposing during a lap of a few seconds a radiative flux on the front face of a sample whose absorptance is to be identified. The time-dependent temperature on the rear face is measured, and the procedure of inversion is implemented to give a time function of absorbed flux. Only one time-temperature function is measured using a current type K thermocouple. The normal absorptance of the front face is obtained by comparing the time heat flux function of the source and the identified absorbed heat flux function. This method can be quickly and efficiently adopted for many practical applications without the need to use optical devices, which give accurate measurement but at substantial cost. The inverse technique using a conjugate gradient method of minimization with adjoint problem is implemented to estimate the absorbed heat flux. In order to achieve good values of radiative absorptances, reliable knowledge of thermal diffusivities and adequately manufactured samples are required.

机译：本文提出了一种使用逆技术来识别提交给辐射源的各个表面的法线吸收率的简单而快速的方法。该方法包括在几秒钟的时间内将辐射通量施加到要确定吸收率的样品的正面。测量背面上随时间变化的温度，并执行反演程序以给出吸收通量的时间函数。使用电流K型热电偶只能测量一个时间-温度函数。通过比较光源的时间热通量函数和确定的吸收热通量函数，可以得出正面的正常吸收率。该方法可快速有效地用于许多实际应用中，而无需使用光学设备，该设备可提供准确的测量结果，但成本很高。实现了使用伴随问题最小化的共轭梯度法的逆技术来估计吸收的热通量。为了获得良好的辐射吸收率值，需要可靠的热扩散知识和适当制造的样品。

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来源
《Heat Transfer Engineering》 |2014年第15期|1201-1208|共8页
作者
MOHAMMED BOUSSAID; YOUNES BOULAADJOUL; MOHAMED HEDIBEL; TAHAR LOULOU;
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作者单位

University de Boumerdes, Boumerdes, Algeria,Faculte des Sciences, University de Boumerdes, 35000, Boumerdes, Algeria;

University de Boumerdes, Boumerdes, Algeria;

University de Boumerdes, Boumerdes, Algeria;

Universite' de Bretagne Sud, LIMATB, Lorient, France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
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8. Measurement of hemispherical total emittance and normal solar absorptance of selected materials in the temperature range 280 deg to 600 deg K [R] . Curtis, H. B. 1965

机译：在280至600摄氏度的温度范围内测量所选材料的半球总发射率和正常太阳能吸收率

Fast Identification Method of Total Normal Surface Absorptances Using Inverse Techniques

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