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Experimental analysis and exergy efficiency of a conventional solar still with Fresnel lens and energy storage material

机译：常规太阳能仍用菲涅耳透镜和储能材料的实验分析与漏洞效率

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摘要

This study focuses on the experimental investigation and exergy analysis of a modified solar still (MSS) with convex lenses on glass cover to collect the solar radiation at the focus on surface water. A comparative analysis of the performance and yield of the MSS with convex lenses and the conventional single slope SS were carried out for the same climatic condition of Tanta (Egypt). Similarly, the effect of modification in the SS using convex lenses, with or without black stones, on the freshwater yield is experimentally investigated. The results indicated that the lenses focus the solar radiation to the water placed in the basin and increase the water-glass temperature difference (T_w-T_g). The yield of freshwater from the MSS with the convex lenses is comparatively higher than that of the conventional SS (26.64%). In addition to convex lenses in the inner cover surface, freshwater yield improved by 35.55% by adding blue stones as energy material inside the basin under constant water mass of 30 kg. The maximum exergy efficiency of the SS with lenses and blue stones was 11.7%, while the SS with lenses alone was 4%. The quality of freshwater produced after desalination was well within the World Health Organization standards. The total dissolved solids and pH after desalination were 22 mg/L and 8.08, respectively.
机译：本研究侧重于用玻璃盖上用凸透镜进行改进的太阳静止（MSS）的实验研究和声，以收集太阳辐射在地表水上。对具有凸透镜和传统单斜率Ss的MSS的性能和产量的比较分析，对钽钽（埃及）的相同气候条件进行了。类似地，通过实验研究了在淡水产量上使用凸透镜，具有或没有黑色石块的SS中修饰的影响。结果表明，镜片将太阳辐射聚焦到放置在盆中的水中并增加水玻璃温差（T_W-T_G）。来自凸形镜片的MSS的淡水的产量比较高于传统SS（26.64％）。除了内盖表面中的凸透镜外，通过在30kg的恒定水质量下添加蓝色石材作为盆内的能量材料，淡水产量提高了35.55％。镜片和蓝色石头的SS的最大漏洞效率为11.7％，而单独的镜片的SS为4％。海水淡化后生产的淡水质量良好，在世界卫生组织标准中。脱盐后的总溶解固体和pH分别为22mg / L和8.08。

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  • 来源
    《Heat transfer》 |2019年第3期|885-895|共11页
  • 作者

    Ravishankar Sathyamurthy; Elsayed El-Agouz;

  • 作者单位

    Department of Mechanical and Power Engineering Faculty of Engineering Tanta University Tanta Egypt Department of Automobile Engineering Hindustan Institute of Technology and Science Chennai India;

    Department of Mechanical and Power Engineering Faculty of Engineering Tanta University Tanta Egypt;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    desalination; exergy efficiency; Fresnel lenses; solar still;

    机译：海水淡化;富有效率;菲涅耳透镜;太阳能静止;

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