Topic
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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TL;DR: In this article, a case study of underground thermal storage in a solar-ground coupled heat pump system (SGCHPS) for residential buildings is presented, where the experimental efficiency is based on the absorbed solar energy by the collectors.
77 citations
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77 citations
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09 Nov 1976
TL;DR: In this paper, a system for converting solar energy into electric energy at reduced cost makes use of an array of light sensitive, voltage producing solar cells of the flat disc silicon type, each cell has a truncated conical shell mounted on legs at a spaced distance thereover, the shell having a mirror-like reflective inner surface.
Abstract: A system for converting solar energy into electric energy at reduced cost makes use of an array of light sensitive, voltage producing solar cells of the flat disc silicon type. To increase power, while using fewer costly cells, each cell of the array has a truncated conical shell mounted on legs at a spaced distance thereover, the shell having a mirror-like reflective inner surface. Thus, sunlight is received in the large end and reflected through the small end to the cell. A sealed, weather-tight enclosure for the array, has fluid inlets and outlets for producing heat, the heat conductive shells absorbing and radiating heat.
77 citations
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TL;DR: In this article, a mirror symmetrical dielectric totally internally reflecting concentrator (MSDTIRC) is proposed to increase the electrical output of a solar photovoltaic (PV) system.
77 citations
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TL;DR: In this paper, the authors proposed and analyzed an electric energy storage system fully integrated with a photovoltaic PV module, composed by a set of LiFePO4 flat batteries, which constitutes a generation-storage PV unit.
Abstract: This paper is proposing and analyzing an electric energy storage system fully integrated with a photovoltaic PV module, composed by a set of lithium-iron-phosphate (LiFePO4) flat batteries, which constitutes a generation-storage PV unit. The batteries were surface-mounted on the back side of the PV module, distant from the PV backsheet, without exceeding the PV frame size. An additional low-emissivity sheet was introduced to shield the batteries from the backsheet thermal irradiance. The challenge addressed in this paper is to evaluate the PV cell temperature increase, due to the reduced thermal exchanges on the back of the module, and to estimate the temperature of the batteries, verifying their thermal constraints. Two one-dimensional (1D) thermal models, numerically implemented by using the thermal library of Simulink-Matlab accounting for all the heat exchanges, are here proposed: one related to the original PV module, the other related to the portion of the area of the PV module in correspondence of the proposed energy-storage system. Convective and radiative coefficients were then calculated in relation to different configurations and ambient conditions. The model validation has been carried out considering the PV module to be at the nominal operating cell temperature (NOCT), and by specific experimental measurements with a thermographic camera. Finally, appropriate models were used to evaluate the increasing cell batteries temperature in different environmental conditions.
77 citations