Surface Temperature Measurement of In-Vessel Components and Its Real-Time Validation
Surface Temperature Measurement of In-Vessel Components and Its Real-Time Validation
复制标题
容器内部件的表面温度测量及其实时验证
DOI：
10.13182/fst15-187
复制
发表时间：
2016
影响因子：
0.9
通讯作者：
A. Team
中科院分区：
文献类型：
--
作者：
A. Herrmann;B. Sieglin;M. Faitsch;A. Team
摘要监测容器内部件的表面温度是机器保护的一部分。必须考虑表面温度本身以及与冷却结构的界面的最终温度。容许表面温度不是一个固定的量，而是取决于热负荷情况。界面温度可以通过求解热扩散方程和确定靶内的温度分布来计算。表面效应和寄生辐射伪造的估计温度，这是高于真实的体温度。从机器保护的角度来看，贡献本身是安全的。它们可能导致早期报警，而目标温度本身并不合理，从而降低了容许操作范围。实时表征和量化可以通过考虑测量的表面温度的时间演变来完成。建议通过热负荷计算进行。开发中的红外（IR）系统允许人们从真实的测量的光子通量计算热负荷。表面效应和寄生辐射对计算温度的影响取决于波长。红外系统的一个合适的折衷方案是中波红外系统。它应该与近红外系统结合使用，以便在更高温度下进行温度验证。
Abstract Monitoring the surface temperature of in-vessel components is part of machine protection. The surface temperature itself and the resulting temperature of the interface to the cooling structure have to be taken into account. The tolerated surface temperature is not a fixed quantity but depends on the heat load scenario. The interface temperature can be calculated by solving the heat diffusion equation and determining the temperature profile inside the target. Surface effects and parasitic radiation falsify the estimated temperature, which is higher than the real bulk temperature. From the machine protection point of view, the contributions are inherently safe. They might result in an early alarm, not justified by the target temperature itself reducing the tolerated operation range. Real-time characterization and quantification can be done by considering the temporal evolution of the measured surface temperature. This is recommended to be done by heat load calculation. Infrared (IR) systems under development allow one to calculate the heat load from the measured photon flux in real time. The impact of surface effects and parasitic radiation on the calculated temperature is dependent on wavelength. A suitable compromise for an IR system is a mid-wave IR system. It should be combined with a near-IR system for temperature validation at higher temperatures.