Incorporation of CoO Nanoparticles into Paraffin to Improve the Performance and Yield of Solar Still

IF 0.5 4区化学 Q4 CHEMISTRY, ANALYTICAL Journal of Water Chemistry and Technology Pub Date : 2024-07-31 DOI:10.3103/s1063455x24040088

Suresh Natrayan, Jayaprakash Rajan, Jude Raeymond Jesudass

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Abstract

Incorporating nano phase change materials (NPCMs) into the basin material helps improve the productivity and the evaporation rate in a solar still. Setting heat extraction rate as a standard, a comparative study was made with the yield of a single basin solar still by a phase change material (PCM) and NPCM. To counteract the low thermal conductivity of paraffin wax, metallic nanoparticles of cobalt oxide (CoO) were added. These CoO nanoparticles were found to be attractive for mixing with PCM to increase thermal conductivity. The impact of heat flux, flow rate and metal oxide particles on the flow and heat transfer behaviour of slurries was investigated. The X-ray diffraction (XRD) analysis showed the predominant peak (200) of CoO at 42.3°, with an average CoO nanoparticle size of 6 nm. The FESEM analysis revealed homogeneously aggregated spherical/platelet-shaped CoO nanoparticles ranging within 5–30 nm in size. Solar radiation increases linearly with time, reaching its maximum between 12:00 and 2:00 p.m. The use of NPCM increases the efficiency (12–25%) of the basin material due to its thermal properties and also the water output with an average yield rate of 3.5 L. Finally, the results indicate that the incorporation of CoO nanoparticles into paraffin wax increases the performance of the solar still and improves the water quality parameters.

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在石蜡中加入 CoO 纳米粒子以提高太阳能蒸馏器的性能和产量

摘要将纳米相变材料 (NPCM) 加入蒸馏池材料中有助于提高太阳能蒸馏器的生产率和蒸发率。以热量提取率为标准，比较研究了相变材料（PCM）和纳米相变材料单池太阳能蒸馏器的产量。为了抵消石蜡的低导热性，添加了金属纳米氧化钴（CoO）颗粒。研究发现，这些 CoO 纳米粒子与 PCM 混合后可提高热导率。研究了热通量、流速和金属氧化物颗粒对泥浆流动和传热行为的影响。X 射线衍射（XRD）分析显示，CoO 的主峰（200）位于 42.3°，CoO 纳米颗粒的平均粒径为 6 纳米。FESEM 分析显示了均匀聚集的球形/板状 CoO 纳米颗粒，大小在 5-30 纳米之间。太阳辐射随时间线性增加，在中午 12:00 至下午 2:00 之间达到最大值。由于 NPCM 的热特性，使用 NPCM 提高了水池材料的效率（12%-25%），同时也提高了出水量，平均出水量为 3.5 L。最后，结果表明，在石蜡中加入 CoO 纳米粒子提高了太阳能蒸馏器的性能，改善了水质参数。

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来源期刊

Journal of Water Chemistry and Technology CHEMISTRY, APPLIED-CHEMISTRY, ANALYTICAL

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0.00%

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审稿时长

>12 weeks

期刊介绍： Journal of Water Chemistry and Technology focuses on water and wastewater treatment, water pollution monitoring, water purification, and similar topics. The journal publishes original scientific theoretical and experimental articles in the following sections: new developments in the science of water; theoretical principles of water treatment and technology; physical chemistry of water treatment processes; analytical water chemistry; analysis of natural and waste waters; water treatment technology and demineralization of water; biological methods of water treatment; and also solicited critical reviews summarizing the latest findings. The journal welcomes manuscripts from all countries in the English or Ukrainian language. All manuscripts are peer-reviewed.