海上核电站余排换热器外部自然循环流动研究

对舷侧外置式非能动余热排出换热器外部自然循环进行了数值分析,研究了海洋环境对外部自然循环流动机制的影响。研究结果表明:该型非能动余热排出换热器的外部自然循环存在显著的内外环流耦合流动,海洋环境对自然循环流动状态有一定的影响,海水出口需要结合应用条件进行设计优化。

Analysis concerned with the external natural circulation of passive residual heat removal (PRHR) exchanger located at the ship rail was proposed. The effect of ocean environment on the external natural circulation mechanism was investigated. It was found that at the outside of this kind of exchanger, an eternal and external coupling natural circulation flow existed. The ocean environment had a certain impact on the natural circulation flow and the sea water outlet design should be optimized combined with the application conditions.