Читать книгу Materials for Solar Energy Conversion - Группа авторов - Страница 39

When exposed to open atmosphere, the silicon solar cells may be exaggerated over a period of years due to change in climatic conditions such as humidity, temperature, and air [34]. Photovoltaic silicon modules produce lesser efficiency because of higher temperatures in summer season. Researchers stated that 5% percentage of efficiency would be fallen for every 10°C raise in temperature range since few amount of temperatures could not captured properly by the modules [35]. To overcome this type of problems, modern technology is established by scientists as photoelectric method, namely, photovoltaic thermal systems. This system is adopted by the combination of two models that are photovoltaic and solar thermal collectors, which results in better efficiency [36]. However, overall efficiency will be fallen during summer climatic conditions, so that fluid medium is used to improve the performance of a PV/T system. In the recent days, newly introduced mediums are nanofluids in order to increase performance even better than using water-based mediums [37, 38].