On November 2nd, China International New Energy Conference was held in Wuxi, Jiangsu. At the same time, the international photovoltaic industry technical standards and intelligent operation and maintenance theme forum, the well-known service robot company Cobos was present on how to use robots for smart cleaning of power stations. Speech. At the speech site, Cobos calculated the account for the photovoltaic power station: Photovoltaic solar energy is a huge industry that is developing rapidly in the world. However, due to the lack of active cleaning in the power station, dust pollution has greatly reduced the power generation of the power station. It is estimated to be at least 5% per year. The resulting direct economic losses are staggering: a set of data shows that, as the global installed capacity is expected to reach around 500 GW in 2020, the annual economic loss due to dust reduction will be as high as $5 billion. As the installed capacity of the power station continues to grow, this loss will become more serious. When the global installed capacity is about 1400 GW in 2030, the economic losses caused by dust are expected to be as high as $13 billion. Dust is small, but it can cause 60% of power loss in the panel. How much influence does dust have on the power generation efficiency of the panel? In terms of the amount of deposition in one year, if the normal dust is the highest, the power generation can be attenuated by 40%, but in the case of oily dust, the attenuation rate will be as high as 60%. Small dust can cost tens of millions of dollars a year in photovoltaic power generation projects, which is by no means an alarmist. How does dust affect the power generated by the panel? First, the dust shields the light reaching the photovoltaic module; the second is because some of the acid-alkaline dust erodes the surface of the panel, reducing the transmittance of the panel glass; and third, because dust can affect the heat dissipation of the surface of the photovoltaic module, resulting in The photoelectric conversion efficiency is lowered. Unclean for 8 consecutive days, dust causes power loss to be as high as 14.3% The solar roof power station at the headquarters of Cobos Suzhou conducted an experiment: in the absence of rainfall, the panel was not cleaned for 8 consecutive days. The data showed that the first day after cleaning, the cumulative radiation of the panel was 22 MJ/m2. The power generation per kilowatt module is 5.73kwh, but by the 8th day, the power generation per kilowatt of components under the same radiation has dropped to 4.91kwh. In just 8 days, the dust has caused the power loss to reach 14.3%. It is worth mentioning that this is a relatively good air quality in Suzhou. If the industrial pollution in the north is serious or the northwest wind is too large and the rainfall is small, if it is not clean for many days, the loss of power generation caused by dust will undoubtedly be undoubted. It will be bigger. In fact, dust has always been a fatal problem in reducing the amount of solar panels generated, and even space exploration on behalf of top technology is inevitably plagued by this problem. When the US "Opportunity" space probe first started the Mars exploration mission, the 1.3-meter solar panel could provide 900 watt-hours of electricity per day. However, by June 2010, as the solar panels were stained with Mars dust, it was provided daily. When the power dropped to 500-600 watt hours, NASA had to try to park the two Mars cars on the south-facing slopes so that they could "bake" more sunlight. Cassava Dregs Separator,Cassava Processing Machine,Cassava Processing Equipment,Cassava Milling Machine Hunan Furui Mechanical and Electrical Equipment Manufacturing Co., Ltd. , https://www.thresher.nl.jpg)
August 07, 2021