作　　者： (阮见）; (邹杨）; (李明海）; (周波）; (朱贵凤）; (徐洪杰）;

机构地区： 中国科学院大学,北京100049 中国科学院上海应用物理研究所,上海201800

出　　处： 《核动力工程》 2017年第4期22-26,共5页

摘　　要： 基于Mark-1氟盐冷却高温堆(FHR)系统的热力循环特点,研究FHR耦合空气布雷顿循环系统的热电转换效率。通过研究压气机与透平计算方法,在其实际工作特性曲线的基础上,分析布雷顿循环空气温度和流量变化对FHR系统的影响,以及在非额定工况下运行时系统效率的瞬态变化规律。计算结果显示系统,循环效率随着空气流量增加而逐渐下降,最高可达42.6%;空气流量变化量在小于5%额定流量范围内使循环效率变化幅度小于2%,但超出该范围后可根据效率变化曲线选择不同的系统再热运行方案;此外循环效率随着空气入口温度增加逐渐下降,系统效率变化幅度在1%以内。 Based on the characteristics of power generation and thermodynamic cycle of the mark-1 fluoride salt cooling high temperature reactor system, the thermoelectric conversion efficiency of the FHRs coupled with air Brayton cycle system is studied. By studying the gas turbine calculation method, the effect the air flow rate and inlet air temperature on FHRs and the variation laws of FHR efficiency under non-rated conditions are analyzed. The results show that the thermal efficiency is up to 42.6%, and the efficiency decreases with the increasing of the air flow rate. Less than 5% change of air flow rate can keep the efficiency changing within 2%, and different reheating strategies of the system can be selected if the change of the flow rate exceeds the scope. In addition, the thermal efficiency of the system decreases with the increasing of the air inlet temperature, and the change of the system efficiency is less than 1%.

关 键 词： 氟盐冷却高温堆 布雷顿循环 热电转换效率 瞬态分析