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Solar power harvesting system with metamaterial enhanced solar thermophotovoltaic converter (MESTC)
Solar power harvesting system with metamaterial enhanced solar thermophotovoltaic converter (MESTC)
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机译:具有超材料增强型太阳能热光伏转换器(MESTC)的太阳能收集系统
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摘要
A solar power system includes a sunlight concentrating system (e.g., a heliostat), a thermophotovoltaic (TPV) converter and a thermal power system. The TPV converter includes a metamaterial emitter formed on a box-like enclosure, and an associated photovoltaic (PV) cell. The sunlight concentrating system directs the concentrated sunlight through an inlet opening of the box-like enclosure to heat the metamaterial emitter above 1000° K. Bull's eye structures formed on outward-facing surfaces of the box-like enclosure utilize concentric circular ridges spaced at a fixed grating period that, when heated, generate a radiant energy beam having a peak emission wavelength roughly equal to the grating period. The PV cell converts the radiant energy to produce primary electrical energy. Unconverted solar “waste” heat energy exits the box-like enclosure and is converted by the thermal power system (e.g., using a steam generator) to produce secondary electrical energy.
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