Optimization on Emitter of Thermophotovoltaic Systems with the Rigorous Coupled-Wave Analysis
碩士 === 國立成功大學 === 機械工程學系碩博士班 === 98 === n this study, a promising method to enhance the efficiency is to employ nanoscale surface periodic structures (gratings) as a wavelength-selective Thermophotovoltaic (TPV) emitter tailoring radiation spectrum. We require that its emissivity is close to 1 when...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/44754956933719708221 |
| Summary: | 碩士 === 國立成功大學 === 機械工程學系碩博士班 === 98 === n this study, a promising method to enhance the efficiency is to employ nanoscale surface periodic structures (gratings) as a wavelength-selective Thermophotovoltaic (TPV) emitter tailoring radiation spectrum. We require that its emissivity is close to 1 when incident wavelength is between and close to 0 when incident wavelength is at . This work is going to numerically develop optimized two-dimensional nanoscale gratings as TPV emitters. Their fitting radiative properties will be demonstrated with directional-spectral emittance and acquired from programmed codes based on Rigorous Coupled-Wave Analysis (RCWA) and be compared with other’s to prove our numerical method to work on 2D gratings. We use the Taguchi Methods to optimize the emitter with RCWA, and find out a better structure for emitters(?徵¬= 400 nm、?慶= 400 nm、fx= 0.8、fy= 0.8、d= 200 nm、protruding structure). The emissivity spectrum of various incident angle and polarization can be simulated to show that this specific structure is referred to as a better emitter than that currently being used.
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