CARR冷中子源氢系统冷却方式及自稳特性研究  

Thermal-Dynamic Research of Hydrogen Thermal-Siphon Circulation for Cold Neutron Source in China Advanced Research Reactor

作　　者：沈峰[1] 贾占礼[1] 赵光辉[1] 袁履正[1] 

机构地区：[1]中国原子能科学研究院反应堆工程研究设计所,北京102413

出　　处：《核动力工程》2006年第S2期54-59,78,共7页Nuclear Power Engineering

摘　　要：为了解决CARR高核功率、低富集度下冷包壁面的高热流密度及冷中子源装置的开堆-开源和开堆-停源工况等难题,提出了带助冷的两相热虹吸自然循环冷却方式;建立了冷包内氮气、各层冷包材料和液氢之间的换热简化模型,编制了计算程序,并分析了指定条件下的换热量;从理论上推导和建立了该冷却方式的自稳特性方程,并进行了自稳定性分析。结果表明,该种冷却方式不仅解决高热流密度和开堆停源等热工难题,还证明了该冷却方式具有一定的自稳特性。A new cooling scheme on moderator cell for Cold Neutron Source(CNS)in China Advanced Research Reactor(CARR)is brought forward,which is considered to resolve the thermal-dynamic difficulty of CARR CNS such as the high heat flux from cell wall to liquid hydrogen owing to high nuclear power of CARR and low enrichment of Uranium,the special operation model of off-CNS while reactor is on.The simplified model is founded from the cooling scheme and the calculation program is compiled.Then,the capacity of heat exchanging is calculated.The equation,which implies the self-regulation characteristics of CARR CNS,is derived and established.The self-regulation analysis has been carded out for CARR CNS by analysis of this equation.The result shows that this cooling scheme could overcome the difficulties in high heat flux and operation model of CARR CNS,and is endowed with self-regulation characteristics.

关 键 词：CARR 冷中子源 带助冷两相热虹吸 自稳特性 

分 类 号：TL411[核科学技术—核技术及应用]