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<p>This paper aims to develop a square pyramid solar still by combining a phase change material with Al2O3 nanoparticles to increase the efficiency of producing drinkable water. Aluminum oxide nanoparticles are added to phase transition materials to improve their ability to hold and move heat. During the hottest hours of the day, the NPCM receives energy from below the basin. The sun lets light when it is not too bright. Output, evaporation time, and basin temperature are all better with this solar when used outside. Al<sub>2</sub>O<sub>3</sub> nanoparticles added improve performance and emit more heat, particularly during the night, using solar energy to desalinate water would be a cost-effective and long-term solution. This study investigates the feasibility of using solar still technology and Al<sub>2</sub>O<sub>3</sub> to purify large volumes of contaminated water, thereby alleviating the shortage of drinkable water. The distillation machine is made up of a black metal basin and a square fiberglass pyramid. The sun heats the water in the basin, and as it evaporates onto the glass cover’s fibers, it becomes drinkable. Among the several storage options, aluminum dioxide nanoparticles stand out for their low cost and excellent heat resistance. To find out which plate shape worked best for holding dishes, we tried plates of various shapes, each 5&#xa0;cm or 10&#xa0;cm tall. Use PCM and hot water at depths of 5&#xa0;cm and 10&#xa0;cm to see how well the distillation system works. The examination is performed at a 45° angle to the ground. When the sun is shining, a solar still and PCM can work together to increase hourly output by 162%.</p>

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Experimental investigation of a square pyramid solar still integrated with Al2O3 nanoparticle-based phase change material

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • D. Krishna,
  • Himabindu Eluri,
  • S. Venkateswarlu,
  • Dadapeer Doddamani,
  • Praveen Barmavatu,
  • Jatoth Heeraman,
  • Ramalinga Viswanathan Mangalaraja

摘要

This paper aims to develop a square pyramid solar still by combining a phase change material with Al2O3 nanoparticles to increase the efficiency of producing drinkable water. Aluminum oxide nanoparticles are added to phase transition materials to improve their ability to hold and move heat. During the hottest hours of the day, the NPCM receives energy from below the basin. The sun lets light when it is not too bright. Output, evaporation time, and basin temperature are all better with this solar when used outside. Al2O3 nanoparticles added improve performance and emit more heat, particularly during the night, using solar energy to desalinate water would be a cost-effective and long-term solution. This study investigates the feasibility of using solar still technology and Al2O3 to purify large volumes of contaminated water, thereby alleviating the shortage of drinkable water. The distillation machine is made up of a black metal basin and a square fiberglass pyramid. The sun heats the water in the basin, and as it evaporates onto the glass cover’s fibers, it becomes drinkable. Among the several storage options, aluminum dioxide nanoparticles stand out for their low cost and excellent heat resistance. To find out which plate shape worked best for holding dishes, we tried plates of various shapes, each 5 cm or 10 cm tall. Use PCM and hot water at depths of 5 cm and 10 cm to see how well the distillation system works. The examination is performed at a 45° angle to the ground. When the sun is shining, a solar still and PCM can work together to increase hourly output by 162%.