Standard dust for testing PV modules
Significant yield losses can occur due to dust deposits (soiling) and other contaminants on the surfaces of photovoltaic modules or solar thermal applications. This requires regular cleaning, which results in high mechanical loads on the glass surfaces, which nowadays are usually coated with anti-reflection layers. Damage to these layers through cleaning leads to significant, irreversible yield losses.
We have contributed to the DIN SPEC 4867 standard by developing a test dust tailored for this application. By applying this standard, the surfaces of solar energy systems can be tested regarding their resistance to real cleaning loads in Europe and desert regions. In addition, the damage potential of user-specific cleaning parameters and materials can be evaluated with this method.
A related scientific publication can be found with this link: