Reading the related literature, although there were lots of paper regarding the effect of humidity on the output performance of PV panels, I have just seen two paper mentioned the effect of humidity on the accumulation of dust.
DOES ANY ONE KNOW ANY FURTHER STUDY OR CAN SHARE ANY INFORMATION IN THIS REGARDS?
1. According to the research done by Oguntoke et al [1], atmospheric humidity had negative correlations with dust fall. Mean relative humidity below 50% and mean wind speed above 4 m/s were predicted as critical levels for dust episodes incidence at sites that recorded “heavy” and “very heavy” dust fall.
2. Said and Walwil [2], showed that the adhesion increases with increase in humidity due to the presence of condensed water in the gap between the particle and surface which forms water capillary bridge between the bead and the surface. So dew drops in the morning as well as the amount of humidity could influence the process of dust accumulation.
Reference:
[1] Oguntoke, O., Ojelede, M. E., & Annegarn, H. J. (2013). Frequency of mine dust episodes and the influence of meteorological parameters on the Witwatersrand area, South Africa. International Journal of Atmospheric Sciences, 2013.
[2] Said, S. A., & Walwil, H. M. (2014). Fundamental studies on dust fouling effects on PV module performance. Solar Energy, 107, 328-337.
The adhesive behaviour is likely to be complex and variable, depending on what the dust is made of, how long it remains in contact and a bunch of other factors. The negative correlation is likely to be due to the fact that humid places have higher rainfall, so the modules are washed clean more frequently. SERIS is doing long term in-situ measurements in several locations around the world to get real data on these phenomena.
Dear Prof. Wilfred M Walsh,
Thanks a lot for the information.
How could I access the collected data or the results, which you have mentioned. Did they published any of them as a paper or a report which is available?
Dear Dr Hidouri,
Thanks a lot for the information. As I mentioned above, there are lots of paper regarding the effect of different parameters such as dust, humidity and ... on the output performance of PV cells. However there are a few paper answering how humidity affect the accumulation of dust on the surface of PV panel.
Best regards,
Aslan Gholami
Hi Aslan Gholami,
We have done comprehesive study on effects of dew and humidity on soiling. you can review our paper for detailed outcomes. Hope that helps.
Klemens Ilse ; Benjamin Figgis ; Muhammad Zahid Khan ; Volker Naumann ; Christian Hagendorf, Dew as a Detrimental Influencing Factor for Soiling of PV Modules, IEEE Journal of Photovoltaics Vol. 9 Issue 1, 2019
Kind regards,
Khan.
- Badges
- Science topic
- Similar topics
- Geoscience
- Atmospheric Sciences