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<p>Solar-based air dryers are familiar for drying agricultural products due to their economic, eco-friendly, and uniform drying properties. However, it found the major challenges like weather dependent (temperature fluctuations, variation in humidity), seasonal variability, and slow drying rate influences to minimize the overall thermal performance. This research aims to overcome the above difficulties and enrich the overall thermal and drying performance of solar-based air dryers configured with paraffin phase change material (PCM), which acts as thermal energy storage (TES) and holds a perforate plate-like tree shape. Additionally, the thermal properties of the PCM are significantly enhanced by incorporating nanoparticles like alumina (Al<sub>2</sub>O<sub>3</sub>) and titanium dioxide (TiO<sub>2</sub>) at a concentration of 1%, with paraffin wax used as the base PCM. The results of this study are impressive. The combination of nanoparticles in this hybrid system demonstrated exceptional performance in solar drying. It achieved a maximum heating rate of 42.2 W, a drying chamber temperature of 83.5&#xa0;°C, a drying efficiency of 71.8%, and a drying rate of 0.93 kg&#xa0;h<sup>−1</sup>. Moreover, the system exhibited exergy and energy efficiencies of 6.2% and 64.8%, respectively, significantly surpassing conventional systems. With the moisture ratio decreasing to as low as 0.5, it is evident that this innovative approach significantly enhances the effectiveness of traditional solar drying methods. These findings point to a promising future for solar drying, establishing a new standard for efficiency and performance.</p>

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Integration of phase change material for enriching the solar collector featured with dryer configuration enhanced via alumina/titanium dioxide nanoparticle: performance study

  • 期刊论文

  • 发表日期：

    2025年5月22日

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  • R. Venkatesh,
  • Pradeep Kumar Singh,
  • K. Karthik,
  • Mohanavel Vinayagam,
  • Apurv Verma,
  • S. Prabagaran,
  • Manzoore Elahi M. Soudagar,
  • Sami Al Obaid,
  • Sulaiman Ali Alharbi

摘要

Solar-based air dryers are familiar for drying agricultural products due to their economic, eco-friendly, and uniform drying properties. However, it found the major challenges like weather dependent (temperature fluctuations, variation in humidity), seasonal variability, and slow drying rate influences to minimize the overall thermal performance. This research aims to overcome the above difficulties and enrich the overall thermal and drying performance of solar-based air dryers configured with paraffin phase change material (PCM), which acts as thermal energy storage (TES) and holds a perforate plate-like tree shape. Additionally, the thermal properties of the PCM are significantly enhanced by incorporating nanoparticles like alumina (Al2O3) and titanium dioxide (TiO2) at a concentration of 1%, with paraffin wax used as the base PCM. The results of this study are impressive. The combination of nanoparticles in this hybrid system demonstrated exceptional performance in solar drying. It achieved a maximum heating rate of 42.2 W, a drying chamber temperature of 83.5 °C, a drying efficiency of 71.8%, and a drying rate of 0.93 kg h−1. Moreover, the system exhibited exergy and energy efficiencies of 6.2% and 64.8%, respectively, significantly surpassing conventional systems. With the moisture ratio decreasing to as low as 0.5, it is evident that this innovative approach significantly enhances the effectiveness of traditional solar drying methods. These findings point to a promising future for solar drying, establishing a new standard for efficiency and performance.