Investigation of Cooling Techniques for Roof-Mounted Silicon Photovoltaic Panels in the Climate of the UAE: A Computational and Experimental Study

Tarek Abdelaty, Hassam Nasarullah Chaudhry, John Kaiser Calautit

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Abstract

The increased adoption of photovoltaic (PV) systems for global decarbonisation necessitates addressing the gap in reduced panel efficiency due to overheating. This issue is especially prominent in countries with extremely hot and humid climates where PV utilisation is hindered by declining panel output. A systematic review of PV cooling techniques suggests passive systems are more economical, sustainable, and easier to implement than active systems, despite possessing a lower cooling potential. Air-based systems were deemed the most viable for the UAE’s climate, considering both performance and cost. Based on these findings, two individual improvements for air-based cooling systems were combined in an attempt to achieve greater cooling: a segmented multiangular aluminium fin heatsink developed from previous works. Various perforation patterns were simulated on the chosen heatsink using CFD software to determine the most optimal arrangement. The original and optimised models were both tested under real-life conditions in Dubai, United Arab Emirates, revealing similar cooling potential between the two. The results of this study indicate that the PV cell temperature can be decreased by up to 10°C with the placement of an aluminium fin heatsink, which corresponds to an approximate efficiency increase of 5%.
Original languageEnglish
Article number6706
JournalEnergies
Volume16
Issue number18
DOIs
Publication statusPublished - 19 Sept 2023

Keywords

  • air-based systems
  • aluminium fin heatsink
  • computational fluid dynamics
  • efficiency
  • experimental investigation
  • passive cooling
  • perforations
  • photovoltaics

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

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