中文摘要：

高温换热设备中辐射是重要得传热模式。设备热力学性能的正确评估取决于传热过程熵产的准确计算。用数值模拟方法对一维半透明介质内辐射与导热复合换热过程进行了热力学分析，给出了参与性介质中辐射与导热复合换热过程的无因次熵产公式和熵产数公式，分析了辐射-导热参数、光学厚度、散射反照率、壁面黑度对熵产数的影响。数值模拟结果表明，在整个系统中，熵产数满足热力学第二定律，从而证明了无因次熵产公式及熵产数公式的正确性。最后从熵产数的角度分析了系统中的功损。

英文摘要：

Radiation is an important mode of heat transfer in high-temperature equipment. The correct evaluation of thermodynamic performance for thermal equipments is dependent on the accurate calculation of entropy generation in heat transfer processes. The thermodynamic analysis for combined radiation and conduction heat transfer in one dimensional semitransparent medium were investigated by numerical simulation methods. The formulae of non-dimensional radiation entropy generation and entropy generation number for combined radiation and conduction heat transfer in participating media were given. The effects of conduction-to-radiation parameter, optical thickness, single scattering albedo and wall emissivity on entropy generation number were considered respectively. For the whole system, the numerical results meet the requirement of the second law of thermodynamics and verify the correctness of the formulae of non-dimensional entropy generation and entropy generation number. Finally, the work losses of the whole system were analyzed from the view point of entropy generation number.