Photovoltaic Thermal Energy System

Abstract

Photovoltaic warm (PVT) is a hybrid system, which joins both thermal and electrical energy generations. PVT can be utilized as a cooling system for the PV system to improve the electrical energy effectiveness and simultaneously, produce thermal power, which can be utilized in different applications. A combined photovoltaic - thermal system (PVT) is considered as an engaging creation in solar technology innovation. In these systems, the heat from the photovoltaic modules is extricated utilizing different strategies. The extracted heat is used in thermal systems independently. The unused radiations of the solar spectrum will dissipate their energy as heat in the solar cell. This heat dissipation causes thermal losses in the solar photovoltaic system, thereby reducing its performance. The yield of the PV cells lessens when the working temperature of the solar cell increments. Consequently, for better execution, it is fundamental to keep up the low working temperature of the solar cells. Photovoltaic–warm (PV-T) innovation comprises of an ordinary solar based PV board, combined with a solar thermal collector installed on the rear of the PV panel to pre-heat domestic hot water (DHW) or ventilation air. This permits a bigger segment of the solar energy occurrence on the authority to be transformed into helpful warm and electrical energy A primary feature of this system is that as the efficiency of a PV panel decreases as the cell temperature increases, it helps cool down the cell temperature by using air ventilation or water thus maintaining PV panel temperature. Water or air moving through the thermal collector eliminates heat from the PV cells, taking into account more proficient activity. In addition, water or air heating and electricity can be produced within the same footprint, resulting in more efficient use of valuable roof space.

Keywords: PV Panel, thermal, spectrum