【摘要】 提出了中国先进研究堆冷中子源氢系统的概念设计方案,并进行了可行性试验。针对概念设计中采用的两相虹吸氢回路系统,使用氟里昂113进行了1:1的模化试验研究,确定了中子慢化室含气率、热虹吸系统循环能力及各部件的初步结构形式和尺寸。还进行了气泡在不同液体中上升速度的试验研究,以决定密度、粘度及表面张力等物性对气泡上升速度、含气率、系统循环能力的影响,分析得到模化关系,以便将氟里昂模化试验的结果应用于中国先进研究堆(CARR)堆冷中子源氢系统的设计。更多还原

【Abstract】 Conceptual design of the hydrogen system of cold neutron source (CNS) in China Advanced Research Reactor (CARR) was proposed, and feasibility test was carried out. In order to determine the void fraction in neutron moderator, the circulation ability of the two-phase hydrogen thermal siphon system, and the structure of components of the CNS, the mockup test was performed using Freon-113 as working fluid. To obtain the modeling criterion so that the above experimental results can be applied to the design of CARR, the bubble rising velocities in different liquids were investigated to study the effects of physical properties such as density, viscosity and surface tension on bubble rising velocity, void fraction and circulation ability.更多还原