Open AccessEffect of cooling on power generated by photovoltaic panels
Author(s) -
Sebastian Valeriu Hudișteanu,
Nelu-Cristian Cherecheş,
Cătălin George Popovici,
Marina Verdeș,
Vasilică Ciocan,
Marius Costel Bălan,
Florin-Emilian Țurcanu,
Ionuţ Cristian Scurtu
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1141/1/012008
Subject(s) - photovoltaic system , trnsys , maximum power principle , power (physics) , heat exchanger , energy conversion efficiency , materials science , environmental science , voltage , automotive engineering , nuclear engineering , electrical engineering , mechanical engineering , meteorology , engineering , optoelectronics , thermodynamics , physics , thermal
The paper presents a numerical analysis of the operation of photovoltaic (PV) panels integrated in fixed position on the roofs or facades of the buildings. Knowing that the efficiency of photovoltaic panels is temperature-dependent, and due to fixed PV panel position, the possibility of the improving the conversion is analysed from the point of view of the temperature of the PV cells. The model is simulated using TRNSYS software and the main functioning parameters assessed are the operating temperature of the cells, open circuit voltage, maximum power generated and conversion efficiency. The solution proposed for cooling consists in using water heat exchangers attached to the backside of the photovoltaic panel. The results highlight the direct dependence of the photovoltaic efficiency with the temperature of the panel for different positions in the same geographical location. The energy gain during the cooling interval is about 26.9 Wh/m2 (vertical), 81.9 Wh/m2 (inclined) and 81.7 Wh/m2 (horizontal), which represents an increase of 5.8%, 9.3% and 9.2% respectively, compared to the normal operating conditions.