Welcome To Solarpanel.mobi View all
Product News

Solar Photovoltaic Panel Cooling Technology | DSBsolar

Views : 772
Author : DSBsolar
Update time : 2023-12-05 13:46:24

      With the continuous maturity of photovoltaic power generation technology, the efficiency of solar photovoltaic cells has been greatly improved. However, the absolute value is still relatively low. Currently, the photovoltaic conversion efficiency of silicon solar cells produced in industrial batches is about 13%~14%, and the remaining light energy is converted into thermal energy.

      The materials used for solar panels mainly include monocrystalline silicon, polycrystalline silicon, amorphous silicon, and thin-film batteries, among which monocrystalline silicon and polycrystalline silicon batteries have the highest usage. The power generation efficiency of crystalline silicon solar cells depends on their operating temperature, and every 1 ℃ increase in temperature will result in a 0.4% to 0.5% decrease in output power. Due to more than 80% of the energy reaching the surface of the battery being converted into heat, the working temperature of solar cells is usually above 50 ℃, and even reaches 80 ℃ when heat dissipation is poor. Excessive temperature of solar photovoltaic panels will seriously affect the photovoltaic conversion efficiency of solar cells. Therefore, studying cooling technology to reduce the temperature of photovoltaic panels is of great significance for improving the power generation efficiency of solar photovoltaic systems.

Natural circulation cooling technology

 

Natural circulation cooling technology refers to the addition of ribs, channels, and other structures on the back of solar panels to cool them, mainly using air or water as the working medium to absorb heat and achieve the purpose of cooling. Due to the higher thermal conductivity of water compared to air, water cooling is more effective than air cooling under ventilation conditions.

  

Forced circulation cooling technology

  

The forced circulation cooling technology mainly involves adding ribs, channels, and other structures, using a forced flow circulation system that requires additional driving force. The working medium mainly uses air or liquids with high transmittance. However, adding additional power will undoubtedly increase costs.

  

Combination of natural circulation cooling and forced circulation cooling

 

The solar photovoltaic thermal (PV/T) cooling technology combines photovoltaic cells with solar collectors, combining natural circulation cooling and forced circulation cooling. The conversion efficiency of PV/T cooling technology is about 40%~80%, which is relatively high compared to simple solar photovoltaic cells and solar water heaters.

Related News
The Key to Improve the Efficiency of Solar Panels: Coverage Problem Identification and Fault Detection
The Key to Improve the Efficiency of Solar Panels: Coverage Problem Identification and Fault Detection
Apr .29.2024
The maintenance cost of solar power generation systems is relatively low and only requires regular cleaning and inspection. However, photovoltaic power generation systems face many challenges in the natural environment, such as weather conditions, shading effects and surface pollution. Among these factors, dust accumulation on photovoltaic panels is one of the most important causes of efficiency loss.
Why is it recommended to clean solar panels regularly
Why is it recommended to clean solar panels regularly
Mar .29.2024
Regular cleaning of solar panels can remove dirt and dust, restore the power generation efficiency of solar panels, and also protect photovoltaic panels from corrosion and damage. The frequency and method of cleaning should be determined according to the specific situation and the requirements of the photovoltaic system.
Do solar panels emit radiation?
Do solar panels emit radiation?
Mar .22.2024
Solar power generation is the direct conversion of light energy into direct current energy through the characteristics of semiconductors, and then the direct current is converted into alternating current that can be used by us through the inverter. There is no chemical change and nuclear reaction, so photovoltaic power generation will not cause harm to the human body.
How much do you know about photovoltaic half-piece modules? | DSBsolar
How much do you know about photovoltaic half-piece modules? | DSBsolar
Mar .08.2024
The continuous demand for low electricity costs in the photovoltaic market has led to a technological revolution in high-power modules, and half cell module technology has emerged as The Times require.