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本文研究了两种园筒形黑体空腔的结构,合理布置空腔的热源。在大开孔的情况下也能使靶面温度与腔壁温度保持均匀。精确控制可使这两个黑体炉内壁的最大温差分别保持在2.5℃和3℃以内。实验考察黑体空腔内的两种壁面温度的测量方法,指出两种方法所测温度指示值与腔体温度分布的关系。文中研究并计算几种温度分布情况下靶面和腔壁的有效发射率分布和积分发射率ε~C。
In this paper, the structure of two kinds of cylindrical blackbody cavity is studied, and the heat source of cavity is reasonably arranged. In the case of large openings can also make the target surface temperature and cavity wall temperature remain uniform. Precise control allows the maximum temperature difference between the two blackbody furnace wall were maintained at 2.5 ℃ and 3 ℃. The measurement of two kinds of wall temperature in blackbody cavities was investigated experimentally, and the relationship between the temperature indication measured by the two methods and the cavity temperature distribution was pointed out. In this paper, the effective emissivity distribution and integral emissivity ε ~ C of target surface and cavity wall are studied and calculated under several temperature distributions.