1998 Fiscal Year Final Research Report Summary
Development of progressive high heat flux cooling device EVAPORON in a fusion reactor
| Project/Area Number |
08558051
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Tohoku university |
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Principal Investigator |
TODA Saburo Department of Quantum Science and Energy Engineering. Tohoku university Professor, 大学院・工学研究科, 教授 (60005387)
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| Co-Investigator(Kenkyū-buntansha) |
YUKI Kazuhisa Department of Quantum Science and Energy Engineering. Tohoku university Research Associate, 大学院・工学研究科, 助手 (90302182)
HASHIZUME Hidetoshi Department of Quantum Science and Energy Engineering. Tohoku university Associate Professor, 大学院・工学研究科, 助教授 (80198663)
ISHII Keizo Department of Quantum Science and Energy Engineering. Tohoku university Professor, 大学院・工学研究科, 教授 (00134065)
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| Project Period (FY) |
1996 – 1998
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| Keywords | EVAPORON / First wall / High heat flux load / Metal porous media / Numerical analysis / SIMPLE method |
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| Research Abstract |
A high heat-cooling device EVAPORON (Evaporated-Fluid-Porous-Thermodevice) by use of evaporation phenomena in a porous media has been developed and its cooling performance tests have been performed. This advanced cooling principle is use of latent heat transfer by complete evaporation of liquid fluid coolant in the metal porous media, which is attached on the high heat load surface and a large amount of heat are transferred from the surface by thermal conduction. As a result, it was confirmed that the cooling performance was more than 2 MW/mィイD12ィエD1 in the experiments and that this cooling system had higher cooling performance in numerical simulations, which was about 10 MW/mィイD12ィエD1 or more than it. We had followed conclusions.
(1) A region in which the high heat flux is absorbed by the evaporation and/or boiling is very thin layer nearby the heated surface and the temperature in the region changes rapidly.
(2) Since the layer is very thin, the flow field nearby the heated surface has three-dimensional distribution and strongly depends on the cooling performance of EVAPORON.
(3) It was shown that this system had a level of several MW/mィイD12ィエD1 for the cooling performance. However, we concluded that it was possible to realize higher heat flux more than 10 MW/mィイD12ィエD1 by designing the porous structure such as a gap distribution.
(4) Application of the porous media to FLiBe was estimated numerically. As a result, it was shown that this cooling device in the high heat load environment had sufficient cooling performance by establishing the gap of the porous media.
Above conclusions were almost published in international conferences etc..
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