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介绍了高温气冷堆非能动余热排出系统的辐射换热计算方法。从基本的辐射换热微分方程出发,建立了一套完整的辐射换热数值计算模型,推导了辐射角系数求解公式,建立了3种辐射数值计算方法。应用超松弛数值计算方法求解了方程组。将计算结果与文献例题进行了比较,符合很好。分析比较了高度与间隙比及不同发射率对两种不同方法计算结果的影响。
The calculation method of radiation heat transfer in passive residual heat removal system of high temperature gas cooled reactor is introduced. Starting from the basic differential equations of radiative heat transfer, a complete set of numerical models for radiative heat transfer was established. The formulas for solving the radiation angle coefficients were deduced. Three numerical methods for numerical calculation of radiation were established. The equations are solved by using the method of over relaxation. Comparing the calculation results with the literature examples, it is in good agreement. The effects of height and gap ratio and different emissivities on the calculation results of two different methods are analyzed and compared.