Influence of self-cleaning coating on performance of photovoltaic solar system utilizing mixture of phase change material and Graphene nanoparticle

Abstract

Improvement of electrical efficiency of photovoltaic systems with utilizing self-cleaning approach has been scrutinized in present work. The dust accumulation has a negative efficacy on the performance of the unit and the optical feature of glass has been improved with coating SiO2 nanoparticles. The finned tank of paraffin (RT25) has been utilized for cooling of silicon cell and cooling tube has been utilized in the middle section. The dispersion of Graphene nanoparticles within paraffin and water makes the heat absorption increase. The single phase formulations for both cooling zones have been incorporated and gravity force has been neglected in the model. Numerical approach has been utilized for unsteady simulation and validation section proved the good agreement of current code. The uniformity of cell temperature enhances about 29.53% with mounting fins. Loading nanoparticles causes the liquid fraction to increase about 4.58%. With installing fins, the electrical performance enhances and such increment enhances about 10.22% for coated glass when t = 3600s. Utilizing fins can increase the amount of CO2 reduction about 10.22%. Also, reduction of emission improves about 29% by utilizing glass with coating.