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Photovoltaic thermal hybrid solar collectors, sometimes known as hybrid PV/T systems or PVT, are systems that convert solar radiation into thermal and electrical energy. These systems combine a solar cell, which converts sunlight into electricity, with a solar thermal collector, which captures the remaining energy and removes waste heat from the PV module. The capture of both electricity and heat allow these devices to have higher exergy〔M.J.M. Pathak, P.G. Sanders, J. M. Pearce, Optimizing limited solar roof access by exergy analysis of solar thermal, photovoltaic, and hybrid photovoltaic thermal systems, ''Applied Energy'', 120, pp. 115-124 (2014). 〕 and thus be more overall energy efficient than solar photovoltaic (PV) or solar thermal alone.〔Ahmad Mojiri, Robert A. Taylor, Elizabeth Thomsen, Gary Rosengarten, ''(Spectral beam splitting for efficient conversion of solar energy—A review )'', Renewable and Sustainable Energy Reviews Volume 28, December 2013, Pages 654–663〕 A significant amount of research has gone into developing PVT technology since the 1970s. Photovoltaic cells suffer from a drop in efficiency with the rise in temperature due to increased resistance. Such systems can be engineered to carry heat away from the PV cells thereby cooling the cells and thus improving their efficiency by lowering resistance.〔S.A. Kalogirou, Y. Tripanagnostopoulos (30 January 2006). These systems are most often used for domestic hot water (DHW) and electricity production〕 Although this is an effective method, it causes the thermal component to under-perform compared to a solar thermal collector. Recent research showed that photovoltaic materials with low temperature coefficients such as amorphous silicon (a-Si:H) PV allow the PVT to be operated at high temperatures, creating a more symbiotic PVT system. This advantage can be tuned by controlling the dispatch strategy of thermal annealing cycles in any region of the world. == System types == A number of PV/T collectors in different categories are commercially available and can be divided into the following categories: * PV/T liquid collector * PV/T air collector * PV/Ta Liquid and air collector * PV/T concentrator (CPVT) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「photovoltaic thermal hybrid solar collector」の詳細全文を読む スポンサード リンク
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