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Study on the cleaning and cooling of solar photovoltaic panels using compressed airflow
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Li, Dacheng, King, Marcus, Dooner, Mark, Guo, Songshan and Wang, Jihong (2021) Study on the cleaning and cooling of solar photovoltaic panels using compressed airflow. Solar Energy, 221 . pp. 433-444. doi:10.1016/j.solener.2021.04.050 ISSN 0038-092X.
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WRAP-Study-cleaning-cooling-solar-photovoltaic-panels-using-compressed-airflow-2021.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer. Download (2199Kb) |
Official URL: https://doi.org/10.1016/j.solener.2021.04.050
Abstract
Solar photovoltaics (PV) are becoming one of the main sources of renewable energy to reduce carbon emissions of electricity supply. It is well recognised that dust accumulation and high temperatures result in a dramatic reduction in the performance of PV panels. To improve the efficiency of solar PV panels, a compressed air-based regulation method which can simultaneously clean and cool PV panels is studied and tested. A modelling study of the dust adhesion and detachment mechanism is conducted and the temperature variation caused by the air blowing process is analysed. Dynamic models of the compressed air release are derived which can be used to guide the design of the regulation system for increasing PV power output. A test system is developed for verifying various design and system parameters. The test results are used to validate the suitability of the modelling and illustrate how the inefficiency arising from soiling and high temperatures can be mitigated with the regulated compressed airflow. PV arrays serving in an arid region are adopted for this study and the increased energy yield arising from the cleaning and cooling effects is evaluated via the experimental test. The relationship between the airflow duration, various sizes of particles cleaning from the surface and power generation efficiency improvement is investigated to maximise the net power output increase from the PV panel. The results of this study can contribute to improving PV efficiency and help to realise decarbonisation in energy industry.
Item Type: | Journal Article | |||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||
Library of Congress Subject Headings (LCSH): | Photovoltaic power generation, Solar panels, Compressed air, Cooling | |||||||||
Journal or Publication Title: | Solar Energy | |||||||||
Publisher: | Elsevier Ltd. | |||||||||
ISSN: | 0038-092X | |||||||||
Official Date: | June 2021 | |||||||||
Dates: |
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Volume: | 221 | |||||||||
Page Range: | pp. 433-444 | |||||||||
DOI: | 10.1016/j.solener.2021.04.050 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 5 May 2021 | |||||||||
Date of first compliant Open Access: | 20 May 2021 | |||||||||
RIOXX Funder/Project Grant: |
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