无限大芯部热容板翅式回热器动态性能研究  

Dynamic Performances of Plate-Fin Recuperator With Infinite Core Heat Capacitance

作　　者：丁铭 王捷[1] 杨小勇[1] 石磊[1] 苏庆善[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2007年第4期453-457,共5页Atomic Energy Science and Technology

基　　金：'863'计划资助项目(2003AA511010);国家自然科学基金资助项目(90410001)

摘　　要：针对高温气冷堆直接氦气透平循环中的板翅式回热器,研究提出一仅考虑回热器芯部热容的集总参数模型,即无限大芯部热容的集总参数模型,并利用四阶龙格-库塔方法求解该模型,求解过程中考虑温度对气体物性的影响。利用该模型,分析了在入口温度、流量阶跃和斜坡扰动下回热器出口温度的响应过程。在此基础上,分析了高温气冷堆直接氦气透平循环中的功率调节过程及透平甩负荷过程时回热器出口温度和芯部温度的响应过程。A lumped parameter model was proposed to research dynamic performances of plate-fin recuperator in high-temperature gas-cooled reactor with direct helium turbine cycle（HTGR-GT）. The model with infinite core heat capacitance could be numerically solved by fourth-order Rounge-Kutta method. Based on this lumped parameter model, transient responses of outlet temperature of recuperator were analyzed when step and ramp changed of inlet temperatures and mass flow rate took place in hot side. Moreover, transient responses of outlet temperature and core temperature were analyzed while power of HTGR-GT was regulated in normal operation condition and total electric load was rejected from full power. The model can be applied to analyze dynamic performances of plate-fin recuperator.

关 键 词：高温气冷堆 板翅式回热器 集总参数模型 动态性能 

分 类 号：TK124[动力工程及工程热物理—工程热物理]