PROJECT TITLE:
Enhancing photovoltaic panel efficiency using a combination of Zinc Oxide and Titanium Oxide water-based nanofluids
1. Research Summary (Abstract):
The study investigates how to enhance photovoltaic (PV) panel efficiency through passive cooling with water-based nanofluids made from zinc oxide (ZnO) and titanium oxide (TiO₂). Researchers tested various concentrations and combinations of these nanofluids on the backs of PV panels to identify the most effective cooling configuration. The optimal blend—0.4% TiO₂ and 0.2% ZnO—reduced backside temperatures and improved electrical output, increasing power by 22.81% and efficiency by 29.47%. This confirms the potential of hybrid nanofluids to improve solar panel performance under high solar irradiation.
2. Background and Motivation:
Context:
Photovoltaic panels lose efficiency as their operating temperatures rise due to solar radiation. With global demand for solar energy growing, maintaining performance under heat stress is crucial.
Gap in knowledge/need:
While various cooling methods exist, few studies have experimentally explored passive cooling using hybrid nanofluids like TiO₂ and ZnO applied directly to PV panel backs.
Why it’s important / What problem it addresses:
This research addresses the drop in solar panel efficiency caused by overheating. It introduces a cost-effective, passive cooling method using hybrid nanofluids, offering a practical way to boost energy output without complex systems.
3. Objectives:
The main goal was to determine how effectively hybrid nanofluids, specifically combinations of titanium oxide (TiO₂) and zinc oxide (ZnO), can cool photovoltaic panels and enhance their efficiency. The research aimed to identify:
- The optimal concentration of each nanofluid when used alone.
- The ideal TiO₂-ZnO mixture for maximum cooling and energy output.
- Whether this passive cooling method could significantly reduce PV temperatures and improve power and efficiency compared to uncooled panels.
4. Methods and Approach:
Approach:
The study used an experimental setup with five identical photovoltaic panels exposed to the same conditions. One panel served as a control, while the others were coated on their backs with different concentrations of TiO₂, ZnO, or their mixtures.
Key techniques:
- Application of nanofluids using a nano spray gun.
- Temperature monitoring via K-type thermocouples.
- Electrical output (voltage, current, power) recorded with a GL 220 midi data logger.
- Tested individual and hybrid nanofluid concentrations to identify optimal cooling and efficiency gains.
5. Key Findings:
- The optimal individual concentrations were 0.4% TiO₂ and 0.2% ZnO.
- The best hybrid mixture was 0.4% TiO₂ + 0.2% ZnO.
- This hybrid reduced PV backside temperature by up to 20.65%.
- It increased output power by 22.81% and efficiency by 29.47%.
- Hybrid nanofluids outperformed single-nanoparticle solutions due to a synergistic cooling effect.
6. Outcomes and Impact Highlights:
Academic:
This study expands the body of knowledge on passive PV cooling by demonstrating the effectiveness of hybrid nanofluids—an area previously underexplored with limited experimental data.
Societal / Economic:
Improving PV efficiency by nearly 30% means more power from the same solar panel area, reducing installation costs and increasing accessibility to solar energy, especially in hot, sun-rich regions.
Policy / Practice:
The results support integrating passive nanofluid cooling methods into solar infrastructure standards and incentives, encouraging adoption of simpler, cost-effective technologies with low maintenance needs.
7. Evidence of Impact
- Performance Boost: The hybrid nanofluid (0.4% TiO₂ + 0.2% ZnO) increased PV output power by 22.81% and efficiency by 29.47%—a substantial gain with direct energy yield implications.
- Thermal Reduction: It lowered panel backside temperatures by up to 20.65%, directly addressing heat-induced efficiency loss.
- Comparative Advantage: Outperformed other passive methods (e.g., fins, water cooling) cited in prior studies, showing higher gains at lower complexity and cost.
- Scalability: The technique requires minimal infrastructure, making it viable for wide adoption in both residential and industrial settings
8. Funding and Support:
Institutional support is implied through the affiliations of the authors with:
- Al-Zaytoonah University of Jordan
- Applied Science Private University
- Middle East University
- Palestine Polytechnic University
These institutions provided the resources and facilities for the experimental work.
9. Supporting Materials / URLs:
No data were used for the research described in the article.
10. Academic profile
Name: Dr. Mohammad Ahmad Hamdan
Affiliation: Professor, Renewable Energy Technology Department, Applied Science Private University, Amman, Jordan
Profile URL: https://www.asu.edu.jo/en/engineering/mo_ahmad/Pages/Personal-Information.aspx
11. Project partners (if any)
1. Al-Zaytoonah University of Jordan
- Department of Alternative Energy Technology
- https://www.zuj.edu.jo
2. Applied Science Private University (ASU)
- Renewable Energy Technology Department
- https://www.asu.edu.jo
3. Middle East University – Jordan
- Faculty of Engineering
- https://www.meu.edu.jo
4. Palestine Polytechnic University
- Department of Electrical Engineering
-https://www.ppu.edu
These institutions supported the research through facilities, staff, and academic collaboration.