Radiative cooling for vertical solar panels

Area of Science:

• Renewable Energy Engineering
• Materials Science
• Thermal Management

Background:

• Radiative cooling offers passive temperature reduction for solar panels.
• Existing materials limit the effectiveness of radiative cooling in photovoltaic (PV) modules.
• High operating temperatures decrease PV module efficiency and lifespan.

Purpose of the Study:

• To introduce and evaluate an innovative V-shaped design for enhanced radiative cooling in vertical PV modules.
• To investigate the impact of the V-shaped design on module temperature and power output.
• To assess the performance of the V-shaped design in diverse climatic conditions.

Main Methods:

• Development of a V-shaped structural design for vertical PV modules.
• Laboratory testing under controlled 1 sun illumination to measure temperature reduction.
• Field testing in warm, humid climates (Thuwal, Saudi Arabia) to evaluate efficiency and power output increases.
• Comparison with conventional horizontal PV modules.

Main Results:

• The V-shaped design achieved a 10.6°C temperature reduction under laboratory conditions.
• Field tests showed a 15% increase in PV module efficiency.
• A 16.8% increase in power output was observed, with operating temperatures 0.2°C lower than conventional modules.
• The design demonstrated effectiveness in warm and humid environments.

Conclusions:

• The V-shaped design is a promising passive thermal management strategy for PV modules.
• This approach significantly improves solar panel performance by reducing operating temperatures.
• The V-shaped design offers a viable solution for enhancing PV efficiency across various climates, supporting carbon neutrality goals.