Analysis of Computation Model of Particle Deposition on Transmittance for Photovoltaic Panels

Particles deposition on surfaces directly affects the transmittance of PV panels, which leads to the decrease of performance of PV modules. This paper introduces a kind of overlapping model proposed by NASA, analyses the effect of the shape and size distribution on transmittance, and verifies it by test data of relevant references. Then a computation model on different incident angles is studied, whose result is compared with another model's. It demonstrates that this computation model can accurately calculate the effect of particle deposition on transmission of photovoltaic panels.