Characteristic of Saturation of Current for Thermionic Energy Converter Operating on Diffusion Mode

被引：0
|
作者：
Zhong W. [1 ]
Lyu Z. [1 ]
Zheng J. [1 ]
Yang Q. [1 ]
机构：
[1] Division of Reactor Engineering Technology Research, China Institute of Atomic Energy, Beijing
来源：
| 1600年 / Atomic Energy Press卷 / 54期
关键词：
Diffusion mode; Saturation current; Thermionic energy conversion;
D O I：
10.7538/yzk.2019.youxian.0029
中图分类号：
学科分类号：
摘要：
In order to illuminate the characteristic of saturation of current for thermionic energy converter (TEC) operating on diffusion mode, transport equations in the interval of the electrodes applied to diffusion mode were built with amending the ionization items of the low-temperature plasma for ignited model. And the boundary conditions were selected according to the ion-richness ratio in the emitter plasma sheath. Then, the model was solved numerically based on Newton iteration method. It is found that the calculated U-I characteristic accords with lecture results. The existence of saturation current can be decided by the neutralization condition of emission and the distribution of electron potential energy can account for its principle. The orientation of potential jump in the collector sheath changes with the increase of current, which doesn't influence the existence of saturation current. © 2020, Editorial Board of Atomic Energy Science and Technology. All right reserved.
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页码：125 / 131
页数：6
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