热管改进型热离子反应堆瞬态分析程序开发

Development of Transient Analysis Code for Improved Thermionic Reactor Using Heat Pipe Radiator

本文针对改进型TOPAZⅡ核反应堆系统的特殊结构及热工水力特性,开发了耦合热管二维计算程序的热离子反应堆系统分析程序TASTIN-HP,并计算分析了其稳态与瞬态事件及典型事故工况下的热工水力特性。结果表明:稳态计算结果与设计值符合良好;升功率事件及部分失流事故中,在一定的时间内,元件各层材料与冷却剂温度均在安全限值以内。本文结果初步证明TASTIN-HP可对热管式辐射器型空间堆进行系统安全分析。

According to the special structure of improved TOPAZ II , a new transient analysis code （TASTIN-HP） coupled with a 2D heat pipe code was developed to analyze its thermal-hydraulic characteristics during steady state, transient events and some typical accidents. The results show that the steady state calculation results are in good agreement with the design values. During the overpower transient and the partial loss of flow accident, in a certain period of time, the temperatures of each layer material and coolant are lower than the safe limits. It is proved that the TASTIN-HP code can be applied in the system safety analysis of space reactor with heat pipe radiator.