Recently, rectennas have drawn attention as an attractive option to harvest radiative thermal energy from the sun and terrestrial thermal sources. In order to achieve the potential high energy conversion efficiencies by this technology, matching conditions between the incident electromagnetic wavelength and the rectenna characteristic length must be satisfied. Therefore, a selective emitter is a key element in high efficiency rectennas. Photonic structures were designed for selective emission using the transfer matrix method and genetic algorithm optimization. Two types of emitters were developed using aluminum as the supporting substrate. This paper presents narrowband selective emitters with a peak emissivity at 9.45 μm made of alternating layers of Al2O3 and SiO2 on a substrate, and broadband selective emitters made of alternating layers of Al2O3 and SiC on a substrate with a high emissivity band between 9.5 μm and 10.5 μm.
- Advanced Energy Systems Division
- Solar Energy Division
Selective Emitters Design and Optimization for Energy Harvesting Using Rectennas
Zeyghami, M, Myers, PD, Jr., Goswami, DY, & Stefanakos, E. "Selective Emitters Design and Optimization for Energy Harvesting Using Rectennas." Proceedings of the ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. Volume 1: Biofuels, Hydrogen, Syngas, and Alternate Fuels; CHP and Hybrid Power and Energy Systems; Concentrating Solar Power; Energy Storage; Environmental, Economic, and Policy Considerations of Advanced Energy Systems; Geothermal, Ocean, and Emerging Energy Technologies; Photovoltaics; Posters; Solar Chemistry; Sustainable Building Energy Systems; Sustainable Infrastructure and Transportation; Thermodynamic Analysis of Energy Systems; Wind Energy Systems and Technologies. Charlotte, North Carolina, USA. June 26–30, 2016. V001T07A002. ASME. https://doi.org/10.1115/ES2016-59363
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