摘要
数值模拟了某型同位素温差电源的热电耦合工作过程,探讨了在温差材料常物性假设条件下环境温度、热源加热功率、表面发射率、肋片高度、肋片数等参数对温差电源工作特性的影响。结果表明,加热功率对电源内部的温度影响最明显,而环境温度、表面发射率及肋片参数对电源表面的温度影响显著;环境温度及表面发射率对温差电源电性能的影响作用较小;散热肋片安装后电源整体温度明显降低,输出电性能得到改善;较大的加热功率有利于提高温差电源的转换效率。
The operation procedure of heat-electricity coupling for one kind of radioisotope thermoelectric generator was simulated, parameters of thermo-material in the condition of constant physical characteristic, such as environment temperature, heating power, surface emissivity, region height and region number, affecting on operating characteristic were discussed. Results show that the effect of heating power is obvious, the effect of environment temperature and surface emissiveity on operating characteristic is tiny. Heat source temperature decreases obviously after installing the scatter region, and output capability is reformed. The higher heating power is helpful for improving exchange efficiency of the heat source.
出处
《电源技术》
CAS
CSCD
北大核心
2008年第7期464-467,共4页
Chinese Journal of Power Sources
关键词
温差电源
热电耦合
数值模拟
radioisotope thermoelectric generator
heat-electricity coupling
numerical simulation
