Wind tunnel tests show spacing between panels is key to reduce soiling

Scientists have placed four PV panels in a 21-meter wind tunnel and run different tests regarding tilt angles, mounting height, spacing, and incoming flow direction. They found that when the spacing between panels exceeds twice the panel height, the mutual influence on dust deposition becomes negligible. Researchers from China's Ningxia University have investigated dust deposition characteristics on PV panels using a series of wind tunnel experiments. Specifically, they have focused on how variations in tilt angle, mounting height, spacing, and incoming flow direction influence the mass of the ...

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