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<p>The dish collector receiver is essential in solar cooking applications as it captures and transmits solar energy to heat cooking mediums. Recently, nano-enhanced coatings have emerged as a promising approach to improve the performance of collector receivers by enhancing thermal efficiency. However, inefficient coating on the receiver surface can result in increased heat loss and variations in thermal performance. This study investigates the effectiveness of dish collectors for cooking applications using various receiver coatings, with a specific focus on nanotechnology integration. The research employs titanium dioxide/ silicon dioxide (TiO<sub>2</sub>/SiO<sub>2</sub>) nanoparticles blended with black matte paint in 2% weight ratios. The hybrid nano-enhanced coating is prepared through ultrasonication and applied using spray pyrolysis, which enhances the thermal conductivity of the base coating material, thereby facilitating better heat transfer between the cooker and the cooking materials. The results demonstrate that the hybrid nano-enhanced coating displays superior thermal performance and heat transfer rates compared to mono-black paint, TiO<sub>2</sub>, and SiO<sub>2</sub> coating conditions. With the hybrid TiO<sub>2</sub>/SiO<sub>2</sub> nano-coating, key metrics such as working improved fluid temperature (90.2&#xa0;°C), heat absorption (3412.5W), reduced heat loss (423.8W), reduced cooking time (18&#xa0;min), and higher thermal efficiency and exergy efficiency of 68.9% and 52.5%, respectively. These findings highlight the potential of hybrid TiO<sub>2</sub>/SiO<sub>2</sub> nano-coatings for dish receivers, as they offer improved thermal transfer rates and overall system performance.</p>

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Thermal performance assessment of dish collector-integrated cooking application using TiO2/SiO2 hybrid nano-enhanced coated receiver

  • 期刊论文

  • 发表日期：

    2025年2月28日

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  • R. Venkatesh,
  • Ravindra Pratap Singh,
  • Nagabhooshanam Nagarajan,
  • S. Prabagaran,
  • Vinayagam Mohanavel,
  • Dhaval Rabadiya,
  • Manzoore Elahi M. Soudagar,
  • Majed A. Alotaibi,
  • Asiful H. Seikh

摘要

The dish collector receiver is essential in solar cooking applications as it captures and transmits solar energy to heat cooking mediums. Recently, nano-enhanced coatings have emerged as a promising approach to improve the performance of collector receivers by enhancing thermal efficiency. However, inefficient coating on the receiver surface can result in increased heat loss and variations in thermal performance. This study investigates the effectiveness of dish collectors for cooking applications using various receiver coatings, with a specific focus on nanotechnology integration. The research employs titanium dioxide/ silicon dioxide (TiO2/SiO2) nanoparticles blended with black matte paint in 2% weight ratios. The hybrid nano-enhanced coating is prepared through ultrasonication and applied using spray pyrolysis, which enhances the thermal conductivity of the base coating material, thereby facilitating better heat transfer between the cooker and the cooking materials. The results demonstrate that the hybrid nano-enhanced coating displays superior thermal performance and heat transfer rates compared to mono-black paint, TiO2, and SiO2 coating conditions. With the hybrid TiO2/SiO2 nano-coating, key metrics such as working improved fluid temperature (90.2 °C), heat absorption (3412.5W), reduced heat loss (423.8W), reduced cooking time (18 min), and higher thermal efficiency and exergy efficiency of 68.9% and 52.5%, respectively. These findings highlight the potential of hybrid TiO2/SiO2 nano-coatings for dish receivers, as they offer improved thermal transfer rates and overall system performance.