Reliability and System Performance | Photovoltaic
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Figure 23 shows the variation of the efficiency of the polycrystalline photovoltaic panel with the temperature for the radiation level of 520 W/m 2. When the operating temperature increases, the efficiency of the photovoltaic panel is reduced almost linearly. Figure 23.
In this context, photovoltaic (PV) technology has important advantages, considering that the energy source is renewable and free and the production of electricity is clean and does not have a negative impact on the environment (CO 2 and NOx emissions, waste, noise, etc.).
The simultaneous conversion of solar energy into electric and thermal energy using photovoltaic-thermal panels is known in the literature as PVT (photovoltaic-thermal system) . A particular feature of this solution is the BIPVT concept, which implies the integration of PVT into buildings [3, 4].
As the power of a photovoltaic cell is influenced by the temperature and radiation levels, the standard test conditions (STC) parameters are defined: Tmed = 25 °C, G = 1000 W/m 2, AM 1.5, when PV panels generate the nominal power measured in watt-peak (Wp) .
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