Spectroscopic Goniometry System for Determining Thermal Radiative Properties of Participating Media
Spectroscopic Goniometry System for Determining Thermal Radiative Properties of Participating Media
复制标题
用于确定参与介质的热辐射特性的光谱测角系统
DOI：
10.1080/08916152.2011.556311
复制
发表时间：
2011
影响因子：
3.5
通讯作者：
A. Steinfeld
中科院分区：
文献类型：
--
作者：
P. S. Coray;W. Lipiński;A. Steinfeld
摘要介绍了一种用于测量太阳热和热化学应用中所遇到的半透明介质的方向性和光谱特性的光谱系统。该系统包括一个耦合到双辐射源的双单色器和一个旋转的多元素夹层探测器，以便能够在0.3-4μm的光谱范围内进行测量。采用直接迭代和逆辐射传输技术从双向反射和透射率测量中提取感兴趣的辐射特性。给出了两个实例，证明了该方法的可行性：(1)测定网状多孔陶瓷的消光系数；(2)提取颗粒填充床的全套辐射特性。
Abstract A spectroscopy system developed to measure directional and spectral characteristics of semi-transparent media encountered in solar thermal and thermochemical applications is presented. The system incorporates a double monochromator coupled to a double radiation source and a rotary multi-element sandwich detector to enable measurements in the spectral range between 0.3–4 μm. Direct iterative and inverse radiative transfer techniques are employed to extract radiative properties of interest from bi-directional reflectance and transmittance measurements. Two examples demonstrating the feasibility of the method are given: (1) the determination of the extinction coefficient of reticulate porous ceramics and (2) the extraction of a complete set of radiative properties for a packed bed of particles.