2001 Fiscal Year Final Research Report Summary
Development of direct energy conversion system from high temperature thermal radiation to electricity by solar themophotovoltaic system
| Project/Area Number |
11555057
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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 |
Thermal engineering
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
YUGAMI Hiroo Tohoku University, Graduate School of Engineening, Professor, 大学院・工学研究科, 教授 (60192803)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAGUCHI Masafumi Toyota Institute of Technology, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (50268033)
MARUYAMA Shigenao Tohoku University, Graduate School of Engineening, Professor, 流体科学研究所, 教授 (80173962)
OHTA Terukazu Tohoku University, Graduate School of Engineening, Professor, 大学院・工学研究科, 教授 (00006678)
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| Project Period (FY) |
1999 – 2001
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| Keywords | Termophotovoltaic / Solar Cells / Photovoltaic cell / Solar energy utilization / Concentrated Solar Energy / Selective emitter / Surface grating / Photonic crystal |
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| Research Abstract |
Thermophotovoltaic (TPV) power generation is considered to be a new environment friendly power generation system. In this study, we have investigate the TPV system driven by concentrated solar thermal energy as the primary resource, which is called as solar-TPV and is the clean and renewable energy system. The first demonstrate of solar-TPV experiment in Japan is planned in this project. Several key component technologies, such as solar concentrator, solar thermal receiver, rare-earth selective emitter, and photovoltaic cell for TPV, are also investigated in this study. The following results are obtained in this project.
(1) We have constructed the system, which was composed of the auto-tracking parabolic concentrator using CCD camera. A solar image at the focal point is evaluated by measuring the spatial distribution of solar heat. Using this data a solar thermal receiver is designed and tested under real solar system. From this experiment, we obtained receiver temperature more than 1500K by using Mo thermal shield. In addition to this, it is found selective emitter system boots the receiver temperature. This can be attributed to narrow thermal radiation spectrum. (2) Two kind of selective thermal radiators, which are a key technology to increase the TPV efficiency, are investigated in this study. Rare-earth (Er) doped selective emitter shows high selective radiation as compare as that developed by NASA and high thermal stability up to 20OK. The manufacturing process of surface grating structure on tungsten metal substrate is established. We observe the clear emission peak corresponding the surface periodicity. The high temperature resistive W gratings is also obtained in this study. (3) PV cell experiment revealed that the optimum distance between PV cell and radiator exist on TPV system.
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