Enhancing Photovoltaic Efficiency in Arid Regions

Strategic Insights -

Photovoltaic panels are a vital source of sustainable electrical energy, but their efficiency declines with increasing temperature. Researchers from Middle Technical University have developed a novel evaporative cooling and groundwater-based system to address this issue. Their study demonstrates the effectiveness of this system in enhancing energy generation in hot, dry climates.

Key Takeaways:

  • The evaporative cooling system reduced the average panel temperature by 15 °C, resulting in an 8.4% increase in photovoltaic efficiency.
  • The groundwater-to-air heat exchanger reduced the panel temperature by 22.8 °C, leading to a 12.7% increase in efficiency.
  • The system maintained air conditions of 32.6 °C and 62% relative humidity.
  • The groundwater-to-air heat exchanger lowered the air temperature from 43.5 to 26.3 °C at 55% relative humidity.
  • The hybrid evaporative and groundwater cooling system significantly improved the performance of photovoltaic panels in arid regions.
  • The research involved a team of authors, including Deyaa M. N. Mahmood, Issam M. Ali Aljubury, Najah M. L. Al Maimuri, Mudhar A. Al-Obaidi, Farhan Lafta Rashid, Arman Ameen, Shaohua Dong, and Yasir Mukhtar.
  • The study aimed to demonstrate the effectiveness of the novel evaporative cooling and groundwater-based system.

Statistics:

  • 15 °C: the average reduction in panel temperature achieved by the evaporative cooling system.
  • 8.4%: the increase in photovoltaic efficiency resulting from the evaporative cooling system.
  • 22.8 °C: the reduction in panel temperature achieved by the groundwater-to-air heat exchanger.
  • 12.7%: the increase in energy efficiency achieved by the groundwater-to-air heat exchanger.
  • 62%: the relative humidity maintained by the system.
  • 43.5 °C: the initial air temperature lowered by the groundwater-to-air heat exchanger.
  • 26.3 °C: the final air temperature after the groundwater-to-air heat exchanger.
  • 55%: the relative humidity at which the air temperature was lowered.

Sources:

  • Experimental evaluation of a hybrid evaporative and groundwater cooling system for enhancing photovoltaic efficiency in arid climates. Scientific Reports, 2025,15(1):1-14. (http://www.nature.com/srep/index.html)
  • Middle Technical University. (2025). Studies from Middle Technical University in the Area of Electronics Described (Experimental evaluation of a hybrid evaporative and groundwater cooling system for enhancing photovoltaic efficiency in arid climates). Electronics Newsweekly. November 4, 2025; p 467.