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Photovoltaic thermal hybrid solar collector
About: Photovoltaic thermal hybrid solar collector is a research topic. Over the lifetime, 8688 publications have been published within this topic receiving 232734 citations.
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123 citations
TL;DR: In this article, a simple and efficient photocharging design approach is demonstrated, where a promising low cost single junction solar cell such as perovskite solar cell or dye sensitized solar cell efficiently charges a Li4Ti5O12-LiCoO2 Li-ion cell using a DC-DC voltage boost converter.
Abstract: Solar cells become a viable energy source to charge lithium ion batteries. Here a simple and efficient photocharging design approach is demonstrated, where a promising low cost single junction solar cell such as perovskite solar cell or dye sensitized solar cell efficiently charges a Li4Ti5O12-LiCoO2 Li-ion cell using a DC–DC voltage boost converter. The converter boosts the low input voltage of a single junction solar cell to charge a lithium ion cell and offers advantages including maximum power point tracking of solar photovoltaics and overvoltage protection for the lithium ion cell. This is the first demonstration of this technology. This approach leads to the highest reported overall efficiency of 9.36% and average storage efficiency of 77.2% at 0.5 C discharge for a perovskite solar cell-converter charging. The high efficiency for the perovskite solar cell-converter charging is attributed to maximum power harvesting along with high power conversion efficiency of the perovskite solar cell and low potential polarization between the charge and discharge voltage plateaus for the Li4Ti5O12-LiCoO2 Li-ion cell.
123 citations
TL;DR: In this paper, the authors proposed a new approach to solar hydrogen production with the integration of methanol steam reforming and middle-temperature solar thermal energy, which can reach levels higher than 90% and the volumetric concentration of hydrogen in the gas products can account for 66−74% above the solar flux of 580 W/m 2.
123 citations
TL;DR: In this paper, a Computational Fluid Dynamics (CFD) model has been developed to calculate the temperature profile in the wall of absorber tubes of parabolic-trough solar collectors using steam as heat-transfer fluid.
123 citations
TL;DR: In this article, a review of photoelectrochemical effects to convert solar energy directly to electric power or synthetic fuel is given, with a brief reference to the thermodynamics of photoelectric transducers.
Abstract: Current research and development work in solar energy utilization is very briefly reviewed. Attention is drawn to the possible use of photoelectrochemical effects to convert solar energy directly to electric power or synthetic fuel. Photoelectrochemical cells that have been proposed for this purpose are classified into three types, and a detailed description of their mode of action is given. The solar spectrum at the earth's surface and terrestrial receipts of solar energy are discussed. The factors that limit the power conversion efficiency of photoelectrochemical cells are described, and a brief reference is made to the thermodynamics of photoelectric transducers. Some work that, although not directly related to solar energy conversion, is of possible relevance, is summarized: the topics covered are the photosensitization of processes at semiconductor electrodes, pigment films on metal electrodes, and the primary processes of energy and charge transfer in natural and artificial photosynthetic membranes.
123 citations