| Project/Area Number |
25600129
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
General applied physics
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
ONO Takahito 東北大学, 工学(系)研究科(研究院), 教授 (90282095)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TODA Masaya 東北大学, 大学院工学研究科, 准教授 (40509890)
川合 祐輔 東北大学, 工学(系)研究科(研究院), 助教 (20451536)
|
|---|
| Project Period (FY) |
2013-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
|---|
| Keywords | 熱電子発電 / 排熱 / マイクロ発電 / クリーンエネルギー / 熱電発電 / エナジーハーベスタ / MEMS / 太陽発電 |
|---|
| Outline of Final Research Achievements |
Thermionic power generation is one of clean sources, which directly converts heat into electrical energy using thermionic electrons. We developed a micro-gap thermionic power generator, which operates at relatively low temperature using SiC as an emitter.In this work, we have firstly demonstrated low temperature operation at 830 degree C as a result of micro-gap between the emitter and collector electrodes. An output power density of 11.5 mW/cm2 is obtained. Besides, the heat losses from the emitter electrode are evaluated and calculated. The thermal resistance of the micro-gap is measured to be 2.4 K/W. As a result,thermal conduction to the collector is by far the predominant thermal loss. It is needed for downsizing the silicon dioxide columns of the micro-gap in order to increase the power conversion efficiency.
|
