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Thermal Science and Engineering Progress, 2022
In this paper the novelty is represented by comparison of optical and energy performances of spherical mirror, rarely used as primary optics in point-focus CPV systems, with those of refractive or parabolic reflective optics. First, concentration factor and optical efficiency are experimentally determined varying distance between Triple-Junction (TJ ...
Carlo Renno
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In this paper the novelty is represented by comparison of optical and energy performances of spherical mirror, rarely used as primary optics in point-focus CPV systems, with those of refractive or parabolic reflective optics. First, concentration factor and optical efficiency are experimentally determined varying distance between Triple-Junction (TJ ...
Carlo Renno
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Solar Energy, 2016
Abstract The purpose of this study was to analyze and compare the thermal performances of a line-focus and a point-focus solar concentrators (LFSC and PFSC, respectively) under similar operating and weather conditions in South Korea. Both concentrator systems had Fresnel lenses of the same surface area. To reduce heat loss, absorber pipes of the LFSC
M. Imtiaz Hussain, Gwi Hyun Lee
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Abstract The purpose of this study was to analyze and compare the thermal performances of a line-focus and a point-focus solar concentrators (LFSC and PFSC, respectively) under similar operating and weather conditions in South Korea. Both concentrator systems had Fresnel lenses of the same surface area. To reduce heat loss, absorber pipes of the LFSC
M. Imtiaz Hussain, Gwi Hyun Lee
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Inefficiencies analysis of a point-focus CPV∕T system
International Journal of Green Energy, 2015ABSTRACTIn this paper, a point-focus concentrating photovoltaic and thermal (CPV∕T) system, sized for a domestic application, is presented in order to evaluate its inefficiencies and the related costs. The CPV∕T system adopts parabolic concentrator mirrors to reflect the light on triple-junction cells InGaP∕InGaAs∕Ge (indium--gallium phosphide∕indium ...
RENNO, Carlo +2 more
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Point Focus Solar Spectral Splitting System for CPV Applications
MRS Proceedings, 2013ABSTRACTSolar spectral splitting technologies have been investigated over the years as alternatives to improve the efficiencies obtained from photovoltaic devices by splitting the incident solar light into its respective wavelengths, and aligning a series of photovoltaic cells arranged next to each other as opposed to being physically stacked on top of
Zayan Ahmed, Chiesa M, Stefancich Marco
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Limit Cycles of Planar Piecewise Smooth Quadratic Systems with Focus-Parabolic Type Critical Points
International Journal of Bifurcation and Chaos, 2021It is very important to determine the maximum number of limit cycles of planar piecewise smooth quadratic systems and it has become a focal subject in recent years. Almost all of the previous studies on this problem focused on systems with focus–focus type critical points. In this paper, we consider planar piecewise smooth quadratic systems with focus-
Liping Sun, Zhengdong Du
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