乏燃料棒束的辐射换热分析

Analysis of Radiative Heat Transfer for Spent Fuel Assembly

乏燃组件衰变热导出对核电厂安全十分重要。核电厂乏燃料组件的传统冷却方式是依靠浸没在水中的流动循环冷却。AP1000非能动核电厂增设了乏燃料喷淋冷却装置。文中针对乏燃料棒束喷淋冷却试验,研究了乏燃料棒束喷淋冷却的辐射换热影响。理论分析结果和试验结果符合较好,表明了乏燃料棒束之间主要通过辐射换热进行相互的温度影响。

Removing decay heat of spent fuel assembly is very important for the nuclear power plant safety. The traditional cooling method for spent fuel assembly is based on water circulating flow. The AP1000 passive nuclear power plant has designed a spray cooling equipment for spent fuel assembly.This paper analyses the radiative heat transfer effect for spent fuel assembly spray cooling test. The result based on the radiative heat transfer theory is in accordance with the test result. And it shows that the heat transfer between the spent fuel assembly is mainly through radiative heat transfer.