摘要
Pu-238放射性同位素温差发电器(RTG)在深空探测中具有广泛应用。基于先进热电材料CoSb_(3)填充方钴矿和半赫斯勒材料,设计了六π对构型分段级联器件。在此基础上,结合通用模块化热源GPHS,设计了一种面向深空应用的80 W级RTG,采用有限元软件Ansys计算了其在深空环境温度下的电性能输出和温度分布。该RTG最大输出功率80.3 W,转换效率8.36%,设计转换效率达到了美国eMMRTG的水平。
Plutonium-238 radioisotope thermoelectric generators(RTGs)are widely used in deep space exploration.This article designed a segmented cascade thermoelectric device facing deep-space appli‐cations,which is based on the advanced CoSb_(3)-filled skutterudite and half-Heusler material.On this basis,along with integration of the general purpose heat source(GPHS),an 80 W RTG for deep-space applications was designed,and its electrical output and temperature distribution under deep-space environment were calculated by the finite element analysis software Ansys.The maximum electrical output power of the RTG is 80.3 W,its conversion efficiency is 8.36%,and its design index meets the level of American enhanced multi-mission radioisotope thermoelectric generator(eMMRTG).
作者
何虎
夏时雨
武伟名
桑雨柔
HE Hu;XIA Shiyu;WU Weiming;SANG Yurou(Department of Nuclear Technology and Application,China Institute of Atomic Energy,Beijing 102413,China)
出处
《电源技术》
CAS
北大核心
2024年第4期743-748,共6页
Chinese Journal of Power Sources
关键词
RTG
分段级联器件
有限元计算
radioisotope thermoelectric generator
segmented cascade thermoelectric device
finite el‐ement analysis
