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Investigating the Effects of Nanoparticles on the Self-Cleaning Properties of Glass Substrates using Electrostatic Induction

Hooshyar, Pooya | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57183 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Moosavi, Ali; Nouri Borujerdi, Ali
  7. Abstract:
  8. With the increasing demand for energy and the gradual reduction of fossil fuel resources, relentless efforts have been made to find clean and efficient alternatives. The use of fossil fuels, with all its pollutants and resulting heat effects, has necessitated a more serious consideration and promotion of clean and sustainable energy sources. Solar energy, as one of the infinite renewable energy sources, has gained a special place due to its easy accessibility and lack of any pollutants. For this reason, the use of solar cell technologies is being highlighted as a fundamental solution for harnessing solar energy in the future. In this study, in order to improve the efficiency of solar panels and reduce the accumulation of dust and dirt on them, a combination of a dust-repellent coating based on silica nanoparticles and an organic cleaner containing titanium dioxide nanoparticles was used. Additionally, by employing an electrostatic induction method and applying a conductive coating based on aluminum oxide on the oxide, the amount of dust and dirt accumulation was reduced while maintaining the transparency of the solar panels. The results of this research indicate that the prepared coating has high transparency and dust repellency, and after various tests, acceptable results have been achieved. This coating, by increasing the transparency of the underlying glass substrate by approximately 1.5%, which indicates its anti-reflective property, can improve the efficiency of solar panels. Furthermore, since similar researches had produced conductive coatings through uneconomical methods, the produced conductive coating was synthesized using the sol-gel method to reduce costs. This coating, under optimal conditions obtained through trial and error during the research, demonstrated a dust removal rate of 97% in a weaker electric field, which is equivalent to the amount obtained in a similar study. The presence of this conductive coating alongside the dust-repellent coating can remove dust and dirt particles under all conditions, including windy conditions or gravitational constraints, and can also remove them through an electrostatic field in the absence of wind. The product resulting from this research has the potential to be used in household and semi-industrial applications, which do not have large dimensions and scopes of use. In case of improvement in its final production price and cost, as mentioned in the suggestions section, it can be used in larger dimensions as well. It is worth mentioning that due to its hydrophilic property, this coating can be used in solar sites with low relative humidity, and further research will be needed if it is to be used in humid areas such as the northern regions of the country
  9. Keywords:
  10. Electrostatic Induction ; Self-Cleaning ; Solar Energy ; Solar Panel ; Dust Repellency ; Glass Substrate

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