Enhancing photovoltaic efficiency in arid climates using cooling strategies

Area of Science:

• Renewable Energy
• Thermal Management
• Photovoltaics

Background:

• Photovoltaic (PV) panel efficiency decreases with rising operating temperatures.
• Effective cooling strategies are crucial for optimizing energy production, especially in hot climates.
• Investigating various cooling techniques is essential for enhancing PV performance.

Purpose of the Study:

• To experimentally evaluate the performance enhancement of PV panels using different cooling methods.
• To assess the impact of water-spray cooling, serpentine water circulation, and fame-glass configurations on PV temperature and electrical output.
• To identify the most effective cooling strategy for improving PV efficiency under real outdoor conditions.

Main Methods:

• Experimental investigation of PV panel cooling techniques under outdoor conditions.
• Evaluation of water-spray cooling, serpentine water circulation, and fame-glass configurations.
• Measurement of PV surface temperature and current-voltage (I-V) characteristics for each configuration.

Main Results:

• Active cooling techniques, including water-spray and serpentine circulation, significantly reduced PV module operating temperatures.
• Water-spray cooling demonstrated the most effective temperature reduction and highest improvement in power output.
• The fame-glass configuration reduced electrical power due to optical losses and partial shading, despite lowering panel temperature.

Conclusions:

• Active cooling is vital for enhancing PV efficiency and energy production in hot climates.
• Water-spray cooling is a highly effective method for thermal management and performance improvement of PV panels.
• Careful consideration of both thermal management and optical performance is necessary when selecting PV cooling strategies.