Surface temperatures are key parameters in many concentrated solar radiation applications. Pyrometric temperature measurement of solar irradiated material surfaces is the alternative to contact measurement techniques, which are inadequate for measuring the temperatures of such surfaces. However, reflected solar radiation is an important uncertainty variable in this non-contact methodology. A promising method for eliminating this solar perturbation is by using centred passband filters on the atmospheric solar absorption bands, creating solar-blind pyrometric systems. A commercial pyrometer has been tested in the wavelength band at around 1.4 (mu)m in the solar furnace at Plataforma Solar de Almeria, showing its advantages and limitations. An estimation of temperature measurement uncertainty for a real case is presented with theory and experiment in agreement: the higher the temperature, the lower the uncertainty. Another experiment has shown that the pyrometer measures temperature properly even through quartz windows in this spectral range.
展开▼
机译：在许多集中的太阳辐射应用中，表面温度是关键参数。太阳能辐照材料表面的高温测量是接触测量技术的替代方法，接触测量技术不足以测量此类表面的温度。但是，在这种非接触式方法中，反射的太阳辐射是重要的不确定性变量。消除这种太阳干扰的一种有前途的方法是在大气太阳吸收带上使用居中的带通滤波器，从而创建太阳盲高温计系统。在Platforma Solar de Almeria的太阳能炉中，已经在约1.4μm的波段对商用高温计进行了测试，显示了其优点和局限性。理论和实验结果一致地给出了实际情况下温度测量不确定度的估计值：温度越高，不确定度越低。另一个实验表明，即使通过该光谱范围内的石英窗，高温计也可以正确测量温度。
展开▼
