大型非能动安全壳冷却液膜稳定性初步研究  

Preliminary Study on Cooling Film Stability of Large Passive Containment

作　　者：张迪[1] 严锦泉[1] 

机构地区：[1]上海核工程研究设计院,上海200233

出　　处：《核电工程与技术》2010年第2期1-7,共7页Nuclear Power Engineering and Technology

摘　　要：本文根据非能动安全壳冷却系统排热机理，以安全壳内部大气压力和温度为边界条件，编写PCS—FT程序模拟钢安全壳内外的传热过程和环形空间大气的自然循环流动．并通过与WGOTHIC程序对APl000核电厂安全壳某事故工况的计算结果相比较，验证了程序的可信性。使用PCS—FT程序并采用保守的假设估算非能动安全壳外液膜温度．评价不同设计及工况参数对液膜温度的影响和液膜沸腾的可能性．讨论了液膜稳定的条件以及WGOTHIC程序液膜传热模型用于堆芯功率更高、安全壳尺寸更大的先进非能动核电厂安全壳分析的适宜性。The main purpose of this paper is to study the boiling possibility for the cooling fihn of passive containment cooling system （PCS）. A computer code called PCS-FT is developed to analyze the heat transfer related phenomena of film flow down ward outside the passive containment , avoiding the extremely hard work of data preparing for WGOTHIC code. The model is set up based on the heat and mass transfer phenomena, inside and outside the containment shell, and the natural converction flow of environmental air in the annulus between the containment and shield building. The code is verified by re- sult comparison with the WGOTHIC code calculation for AP1000 containment. By using this PCS-FT code and conservative method, the influence of design parameters and conditions on film temperature is esti- mated, and the stability of cooling film from PCS is analyzed. The applicability of WGOTHIC code heat transfer model on different passive containments, especially the enlarged advanced passive power plants, is also discussed.

关 键 词：非能动安全 安全壳 冷却液膜 液膜稳定性 传质传热 WGOTHIC程序 

分 类 号：TL364.3[核科学技术—核技术及应用]