Experimental investigations of spray flow rate and angle in enhancing the performance of PV panels by steady and pulsating water spray system

In this study, a spray cooling system is experimentally investigated to increase the photovoltaic panel efficiency. Cooling of photovoltaic panels is one of the important parameters that affects the PV panel performance. In this experiment the effects of spray angle, nozzles to PV panel distance, nu...

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Bibliographic Details
Published in:SN applied sciences 2021, Vol.3 (1), p.130, Article 130
Main Authors: Nateqi, Mojtaba, Rajabi Zargarabadi, Mehran, Rafee, Roohollah
Format: Article
Language:English
Subjects:
3. Engineering (general)
Air flow
Alternative energy sources
Applied and Technical Physics
Chemistry/Food Science
Cooling
Cooling systems
Earth Sciences
Efficiency
Electricity distribution
Engineering
Environment
Evaporation
Experiments
Flow rates
Flow velocity
Heat
Materials Science
Nozzles
Panels
Performance enhancement
Photovoltaic cells
Photovoltaics
Research Article
Solar energy
Spray cooling
Spraying
Water consumption
Water sprays
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Summary:In this study, a spray cooling system is experimentally investigated to increase the photovoltaic panel efficiency. Cooling of photovoltaic panels is one of the important parameters that affects the PV panel performance. In this experiment the effects of spray angle, nozzles to PV panel distance, number of nozzles, and pulsating water spray on the PV panel performance are investigated. For this purpose, an experimental setup was made. The spray angles varied from 15° to 50°. The comparison between the spray angles shows that by decreasing the spray angle to 15° increases the electrical efficiency of PV panel to 19.78% and simultaneously the average PV panel temperature decreases from 64 (for non-cooled PV) to 24 °C. Also, nozzle to PV panel distance was changed from 10 to 50 cm. The best result was obtained for the lowest distance by 25.86% increase in power output. Study of various frequency also show that due to the surface evaporation and the intensity of the radiation, increasing the water spraying frequency can increase or decrease the electrical efficiency. The On–Off water spray system results show that the maximum increase in efficiency was obtained with frequency of 0.2 Hz which it was 16.84%. Water consumption also decreased to half.
ISSN:2523-3963
2523-3971
DOI:10.1007/s42452-021-04169-4