2021 Fiscal Year Final Research Report
Research and development on sensible / chemical heat storage system using fluidized bed for efficient solar heat power generation
| Project/Area Number |
19H02657
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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 | 一般 |
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| Review Section |
Basic Section 31020:Earth resource engineering, Energy sciences-related
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| Research Institution | Niigata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
Bellan Selvan 新潟大学, 研究推進機構, 助教 (50785293)
長瀬 慶紀 宮崎大学, 工学部, 教授 (90180489)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 太陽エネルギー / 集光型太陽熱発電 / 伝熱 / 流動層 |
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| Outline of Final Research Achievements |
This study conducted research and development of a high-temperature particle fluidized bed solar receiver aiming a highly efficient concentrated solar power generation. Firstly, a new fluidized bed receiver was manufactured. The receiver directly heated a particle flow and exhausted the heated particles. Such a receiver was tested using sun simulator. The experiment proved that this receiver could produce hot particles of 634 degree Celsius maximally. However, the energy budget indicated that the air, which was provided for aeration of particles, exited the receiver carrying a large amount of irradiation heat. Therefore, a two-tower type fluidized bed was designed. This fluidized bed exchanged the heat between the particle and the air flow which was heated by an air receiver. A cold-model for the two-tower type fluidized bed was fabricated to yield the flow map indicating the stable flow condition.
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| Free Research Field |
熱工学、エネルギー学
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| Academic Significance and Societal Importance of the Research Achievements |
現状の太陽熱発電所では、溶融塩を熱媒として最高560℃で集熱して水蒸気タービンで発電を行っている。発電効率の向上のためには太陽集熱の温度を上げる必要があるが、溶融塩は熱分解するため高温で用いることが困難である。このような現状を踏まえて、高温でも安定な固体微粒子を集熱物質として用いることで高温型集熱を実現する基本技術について実験的に研究した。本研究によって、連続的に供給される粒子を600℃以上まで集光で加熱してこれを外部に取り出すことができた。またエアレシーバと組み合わせる二塔流動層の可視化実験を行った。これらのように、高温型レシーバの実用化に繋がる知見を積み重ねたことに学術的意義がある。
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