2021 Fiscal Year Final Research Report
Development of a solar receiver with fluidized particles as thermal storage medium for a beam-down solar concentrator
| Project/Area Number |
19K05354
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 31020:Earth resource engineering, Energy sciences-related
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| Research Institution | University of Miyazaki |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
友松 重樹 宮崎大学, 工学部, 助教 (30315353)
河村 隆介 宮崎大学, 工学部, 教授 (70234135)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 太陽熱 / 蓄熱粒子 / ビームダウン式太陽集光装置 |
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| Outline of Final Research Achievements |
A new heat storage particle flow-type solar receiver has been developed that can store heat by directly heating solid heat storage particles with sunlight while they flow, and can also continuously extract heat by exchanging heat through contact with the working fluid used in a heat engine. The receiver, which irradiates sunlight onto the heat storage particles, has a dodecagonal pyramid shape, and a screw feeder is employed to move the heat storage particles. An airtight valve was installed between the receiver and the heat exchanger to reduce leakage of working fluid from the heat exchanger, and a heat storage particle flow-type solar receiver was assembled. Heating experiments were conducted using this device with a beam-down solar concentrator at the University of Miyazaki to confirm its operation.
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| Free Research Field |
熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
固体蓄熱粒子をビームダウン式太陽集光装置で直接加熱して蓄熱を行うとともに，熱機関に用いる作動流体との熱交換によって連続的に熱の取り出しを行うことができる新たな蓄熱粒子流動型太陽光レシーバ装置を開発した．開発した装置は，蓄熱材料を太陽光により直接加熱させ，機械的に加熱時間を制御できるため，高温加熱が可能で，加熱温度制御が容易である．また， 蓄熱粒子から作動流体への伝熱面積が大きいため，短時間に熱の移動が可能であり，熱交換器を小型化できるという特長を持つ．今後，主流になるであろうタワー型太陽集光装置の蓄熱や発電のための研究に貢献するものと考えられる．
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