Exergy and thermoeconomic optimization of a water-cooled glazed hybrid photovoltaic/thermal (PVT) collector

摘要: Abstract Hybrid photovoltaic/thermal collectors (PVT) consist of common photovoltaic modules cooled by a suitable fluid, and convert solar radiation simultaneously into both thermal electric energy. The heat transfer between PV cells fluid allows to reduce the temperature cells; this improves electrical efficiency, but also makes available low-grade for specific applications. As consequence, PVT show very interesting overall energy efficiency. In paper, Second Law analysis water-cooled collector is presented, based on simulations. study discusses crucial problem optimal exploitation technology: electricity production from favoured low temperatures, whereas usability gets higher at high temperatures. paper demonstrates that, any operating condition, it possible calculate an optimum water inlet that maximizes total exergy generated system. falls within range commonly occurring in systems, can be achieved practice through simple control-command Finally, thermoeconomic carried out define price produced collector, as function its content.