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Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic system

机译:基于表面微结构的光谱控制热辐射用于高效太阳能热光电系统

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Thermophotovoltaic (TPV) system is expected to generate electrical power from various heat sources. One of the key devices of TPV system is spectrally control thermal emitters. The performance is not sufficient to achieve high efficient TPV systems. In this study, we developed new type spectral selective emitters with closed-end surface microcavity array. The simulated spectral thermal radiation band width is only 70nm and Q-value=26.4. This Q-value is 5 times larger than the conventional open-end microcavity emitters. The design of Solar-TPV system which is driven by concentrated solar energy using refractory metal emitters with multilayer coating. The estimated system efficiency and electric power density using the experimentally obtained spectral property of the selective emitters is 16.6% and 2.9W/cm~2, respectively.
机译:热光电(TPV)系统有望从各种热源产生电能。 TPV系统的关键设备之一是光谱控制热辐射器。该性能不足以实现高效TPV系统。在这项研究中,我们开发了具有封闭端表面微腔阵列的新型光谱选择性发射器。模拟的光谱热辐射带宽仅为70nm,Q值= 26.4。这个Q值是传统的开放式微腔发射器的5倍。通过使用具有多层涂层的难熔金属发射器,由集中的太阳能驱动的Solar-TPV系统的设计。利用实验获得的选择性发射器的光谱特性,估计的系统效率和电功率密度分别为16.6%和2.9W / cm〜2。

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