Photovoltaic-Thermal System for Trigenerating Electricity, Hot Water and Cold
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TÎRŞU, Mihai, COVALENCO, Nicolae, ZAITSEV, Dmitrii, NEGURA, Ion, GAVRILAS, M., NEAGU, Bogdan Constantin. Photovoltaic-Thermal System for Trigenerating Electricity, Hot Water and Cold. In: Sielmen: Proceedings of the 11th International Conference on Electromechanical and Energy Systems, Ed. 11, 7-8 octombrie 2021, Iași. Chişinău: Pro Libra, 2021, Ediţia 11, pp. 92-96. ISBN 978-166540078-7. DOI: 10.1109/SIELMEN53755.2021.9600378
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Ediţia 11, 2021
Conferința "Sielmen"
11, Iași, Romania, 7-8 octombrie 2021

Photovoltaic-Thermal System for Trigenerating Electricity, Hot Water and Cold


Pag. 92-96

Tîrşu Mihai1, Covalenco Nicolae1, Zaitsev Dmitrii1, Negura Ion1, Gavrilas M.2, Neagu Bogdan Constantin2
1 Institute of Power Engineering,
2 Gheorghe Asachi Technical University of Iasi
Disponibil în IBN: 3 februarie 2022


The use of renewable energy is a priority for both European Union countries and the Republic of Moldova. The main sources of renewable energy that are used today are wind energy and solar energy excluding hydropower. The paper focuses on increasing the efficiency of solar energy use. Usually, solar energy is used in two ways: as electricity by using photovoltaic panels; as thermal energy through the use of solar collectors. Photovoltaic panels have an average efficiency of 6-20%, which means an energy loss of 80% irradiated on its surface. This thermal energy increases the temperature of the photovoltaic cells to 80 °C in summer with strong sun. Heating photovoltaic cells decreases the electrical efficiency by about 0.4% at each degree. The paper proposes an innovative technical solution to increase the efficiency of solar energy use based on photovoltaic panels. The photovoltaic panels are equipped with a cooling system based on tubular capillaries mat, which have a low cost and the integration of a water-to-water heat pump with hot water storage system. The proposed technical solution allows the realization of the trigeneration system: the simultaneous production of electricity, domestic hot water and cold. This system leads to an overall increase in the efficiency of the use of irradiated solar energy on the surface of the photovoltaic panel up to 45% and is much more competitive with the separate use of photovoltaic panels and solar collectors.

heat pump, hybrid PV, photovoltaic-thermal panel (PVT), trigeneration