Reducing PV soiling and condensation using hydrophobic coating with brush and controllable curtains

Abstract

Abstract Solar photovoltaic technology faces many challenges in climates that are characterized by arid nature with high dust frequencies and high relative humidity levels, which make dust build-up extremely problematic. Soiling and condensation affect the performance of PV systems and greatly degrades their power output. Covering the PV panels during non-operation will greatly improve the overall efficiency and reduce the PV soiling. In the present study, a motorized curtain is developed to cover the PV module surface during nights and dust storms. This system successfully reduced the impact of the condensation and the accumulation of soiling that could affect the performance of the PV panels and reduce their efficiencies. This study also experimentally investigates utilizing a superhydrophobic (Laboratory prepared nano-coating) and a superhydrophilic coating on the PV module surface to reduce the impact of soiling. These two proposals could heavily reduce the frequency of cleaning the PV panel; therefore, reducing water consumption; particularly for areas with limited water supply. This study uses experimental data as a method to demonstrate the impact of dust, humidity, and nano-coating on the performance of PV Panels. In addition, PVsyst was used to demonstrate and verify the soiling impact on the performance of PV modules.