Numerical and Parametric Analysis for Enhancing Performances of Water Photovoltaic/Thermal System

Photovoltaic/thermal (PV/T) systems are innovative cogeneration systems that ensure the cooling of photovoltaic (PV) backside and simultaneous production of electricity and heat. However, an effective cooling of the PV back is still a challenge that affects electrical and thermal performance of the...

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Bibliographic Details
Published in:Applied sciences 2022-01, Vol.12 (2), p.646
Main Authors: El Fouas, Chaimae, Cherecheș, Nelu Cristian, Hudișteanu, Sebastian Valeriu, Hajji, Bekkay, Țurcanu, Emilian Florin, Cherecheș, Monica Lilioara
Format: Article
Language:English
Subjects:
Alternative energy sources
Aluminum
Cogeneration
Cooling
Efficiency
Electric power
electrical efficiency
Electricity
Energy balance
Film thickness
Heat conductivity
Heat flux
Heat transfer
Inlet temperature
Mathematical models
Numerical analysis
numerical model
Numerical models
Parametric analysis
Parametric statistics
Photovoltaic cells
photovoltaic thermal system
Photovoltaics
Radiation
Renewable resources
solar energy
thermal efficiency
Thermal power
Velocity
water cooling
Water film
Weather
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Summary:Photovoltaic/thermal (PV/T) systems are innovative cogeneration systems that ensure the cooling of photovoltaic (PV) backside and simultaneous production of electricity and heat. However, an effective cooling of the PV back is still a challenge that affects electrical and thermal performance of the PV/T system. In the present work, a PV/T numerical model is developed to simulate the heat flux based on energy balance implemented in MATLAB software. The numerical model is validated through the comparison of the three-layer PV model with the NOCT model and tested under the operation conditions of continental temperate climate. Moreover, the effect of velocity and water film thickness as important flow parameters on heat exchange and PV/T production is numerically investigated. Results revealed that the PV model is in good agreement with the NOCT one. An efficient heat transfer is obtained while increasing the velocity and water film thickness with optimal values of 0.035 m/s and 7 mm, respectively, at an inlet temperature of 20 °C. The PV/T system ensures a maximum thermal power of 1334.5 W and electrical power of 316.56 W (258.8 W for the PV). Finally, the comparison between the PV and PV/T system under real weather conditions showed the advantage of using the PV/T.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12020646