ENERGY EFFICIENCY OF PHOTOVOLTAIC PANELS WHEN USING HOLOGRAPHIC GRATINES AS PASSIVE SOLAR TRACKERS
E. F. Pen1,2
1Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: голографические решётки, солнечные концентраторы, трекеры солнечного излучения, фотополимерные регистрирующие среды, holographic gratings, solar concentrators, solar trackers, photopolymer recording media
Abstract
Theoretical and experimental estimates of the energy efficiency of holographic gratings as passive solar trackers were obtained. It is found that in central Russia, their use can provide an about 20 % increase in the signal of photovoltaic panels mounted in smart windows. Increase in the signal to a 35 % level is possible only by improving the diffraction properties of gratings, i.e., by expanding the angular selectivity contour while maintaining high diffraction efficiency. This can be achieved either by developing new materials with a refractive index modulation of more than 0.1 with a thickness of the recording layer of about 3 мкм, or using well-known hybrid surface-relief volume diffractive structures with refractive index modulation.
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