Effect of dust deposition on the performance of photovoltaic modules in Taxila, Pakistan

摘要: The air borne dust deposited on the surface of photovoltaic module influence transmittance solar radiations from module’s glazing surface. This experimental work aimed to investigate effect dust two different types modules (monocrystalline silicon and polycrystalline silicon). Two modules each type were used one each pair was left exposed natural atmosphere for three months winter in Taxila, Pakistan. Systematic series measurements conducted time period months corresponding densities. difference between the output parameters clean dirty provided information of percentage loss at density on 0.9867mg/cm2 end study. results showed that deposition has strong impact performance modules. monocrystalline showed about 20% 16% decrease average power respectively compared to same type. It found reduction module efficiency (ηclean - ηdirty) case polycrystalline 3.55% 3.01% respectively. Moreover power more module.