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 thorough review of photovoltaic thermal systems is done on the basis of its performance based on electrical as well as thermal output, and a case study for PV and PV/T system based on exergetic analysis is presented.
Abstract: In this paper, a thorough review of photovoltaic and photovoltaic thermal systems is done on the basis of its performance based on electrical as well as thermal output. Photovoltaic systems are classified according to their use, i.e., electricity production and thermal applications along with the electricity production. The application of various photovoltaic systems is also discussed in detail. The performance analysis including all aspects, e.g., electrical, thermal, energy, and exergy efficiency are also discussed. A case study for PV and PV/T system based on exergetic analysis is presented.
207 citations
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15 Mar 2010
TL;DR: In this article, the authors present a case study of hybrid photovoltaic/thermal (PV/T) systems, which is a combination of solar cells and batteries.
Abstract: Solar Radiation History of PV integrated systems Solar cell materials and its characteristics PV Array Analysis Role of batteries and its uses Case Studies of PV/T Systems Thermal modeling of hybrid photovoltaic/thermal (PV/T) systems Energy and Exergy Analysis CO2 Mitigation and Carbon Trading Economic Analysis Appendices Glossary Subject Index
206 citations
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TL;DR: In this article, a simple method for fabricating graphene aerogel (GA) from graphene oxides only by photoreduction is reported, which is for the first time used to harvest solar energy.
Abstract: Solar steam generation through heat localization is a new approach to efficiently utilize solar energy. Nanocomposites with noble metals and other porous materials have been employed to generate solar vapor at a high light intensity. However, large-scale applications of the nanocomposites based on noble metals are restricted due to their high cost, complex preparation, and low recycling stability. Herein, we report a simple method toward fabricating graphene aerogel (GA) from graphene oxides only by photoreduction, which is for the first time used to harvest solar energy. GA can not only convert almost the entire incident solar light to heat energy but can also self-float on the surface of water and pump the interface water forming a constant water steam. Solar steam generation efficiencies of 53.6 ± 2.5% and 82.7 ± 2.5% are achieved at light intensities of 1 and 10 kW m–2, respectively. Furthermore, this efficiency is still kept at a high value, and the morphology of GA is hardly broken after 10 cycles o...
206 citations
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TL;DR: In this paper, it is concluded that it is very likely that the target of 50% will eventually be achieved, partly because concentration helps increase the efficiency but mainly because the cost of the sophisticated cells needed can only be paid by extracting as much electric power form each cell as possible.
Abstract: Solar energy is the most abundant and reliable source of energy we have to provide for the multi-terawatt challenge we are facing. Although huge, this resource is relatively dispersed. High conversion efficiency is probably necessary for cost effectiveness. Solar cell efficiencies above 40% have been achieved with multijunction (MJ) solar cells. These achievements are here described. Possible paths for improvement are hinted at including third generation photovoltaics concepts. It is concluded that it is very likely that the target of 50% will eventually be achieved. This high efficiency requires operating under concentrated sunlight, partly because concentration helps increase the efficiency but mainly because the cost of the sophisticated cells needed can only be paid by extracting as much electric power form each cell as possible. The optical challenges associated with the concentrator optics and the tools for overcoming them, in particular non-imaging optics, are briefly discussed and the results and ...
205 citations
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TL;DR: In this paper, the authors analyzed different systems with combinations of solar collectors and ground-source heat pumps, and found that the optimal design is when solar heat produces domestic hot water during summertime and recharges the borehole during wintertime.
205 citations