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.