空间核能液态金属朗肯循环的热力学性能分析  

Thermodaynamic Analysis of Space Nuclear Power System Based on Liquid Metal Rankine Cycle

作　　者：张昊春[1] 程献伟[1] 余红星[2] 夏榜样[2] 赵广播[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610041

出　　处：《工程热物理学报》2018年第2期242-248,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助(No.51536001);中央高校基本科研业务费专项资金资助(No.HIT.MKSTISP.201618);核反应堆系统设计技术重点实验室资助(No.SQ-KFKT-02-2016005)

摘　　要：随着深空探测的不断发展,空间探测器对于动力的需求也在不断增加,空间核动力系统由于其自身优良的特性已经广泛的应用到空间探测器的动力系统中。液态金属朗肯循环具有相对成熟的技术和较高的循环效率,适用于多能级、大功率的空间核动力系统中。本文应用能量分析和分析两种热力学方法对输出电功率为5 WM的空间核能朗肯循环核动力系统进行了对比分析,计算出系统各部件的能量损失和损失,找出损失最大的部件并分析原因。最后分析了不同空间环境温度的设定对于系统各部件的损失和效率的影响.With the development of deepening exploration in space, the power demand for space probe is also increasing. Space nuclear power system has been widely applied to the power system of the space probe due to its excellet characteristics. Liquid metal Rankine cycle with relatively mature technology and high cycle effciency, is considered suitable for multi-level, high-power space nuclear power system. In this paper, two kinds of thermodynamic analysis methods, energy analysis and exergy analysis are used to analyze and compare the energy loss and exergy loss of the Rankine space nuclear power system with the output power of 5 WM, in ordet to identify and quantify the sites having largest energy and exergy losses. Finally, the influence of the setting of different space environment temperature on the exergy loss and efficiency of the components of the system is analyzed.

关 键 词：空间核电源 液态金属 朗肯循环 [火用]损失 炯效率 

分 类 号：TK123[动力工程及工程热物理—工程热物理]