2023 Fiscal Year Final Research Report
Development of high temperature sensible/thermochemical heat storage system for high efficiency solar thermal power generation
| Project/Area Number |
21K04962
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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 | Niigata University |
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Principal Investigator |
Bellan Selvan 新潟大学, 自然科学系, 准教授 (50785293)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | Thermal energy storage / Concentrated solar power / Thermochemical storage |
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| Outline of Final Research Achievements |
A lab scale thermochemical reactor-storage system has been designed and constructed to perform the reduction step of the metal oxide particles using solar simulator. Air is used as heat transfer fluid as well as reactant. Fe/Mn particles with different molar ratios (2:1) and (1:3) have been synthesized. The synthesized materials were characterized by X-ray diffraction. Thermogravimetric analyzer (TGA) was used to study the reaction kinetics. Then, to obtain detailed heat transfer characteristics between the bed and heat transfer fluid, to analyze reaction rate and apply shrinking core model, an 1D numerical model has been developed. Moreover, a kinetic analysis of the charging mode has been conducted at different heating rates to derive the kinetic equation and describe the reaction mechanism by determining the appropriate reaction model. The activation energy of iron-manganese oxide has been obtained using four isoconversion methods (KAS, OFW, Starink, Friedman) and Arrhenius plots.
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| Free Research Field |
Solar thermal energy
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| Academic Significance and Societal Importance of the Research Achievements |
Thermal energy storage (TES) plays a vital role in concentrated solar thermal power (CSP) plants to generate electricity beyond on sun hours. A high-energy-density TES system has been developed in this research to operate at temperatures between 800°C-1000°C to enhance the efficiency of CSP plants.
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