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首页> 外文期刊>Heat transfer >Experimental analysis and exergy efficiency of a conventional solar still with Fresnel lens and energy storage material
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Experimental analysis and exergy efficiency of a conventional solar still with Fresnel lens and energy storage material

机译：具有菲涅耳透镜和储能材料的传统太阳能蒸馏器的实验分析和火用效率

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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：这项研究的重点是在玻璃盖上装有凸透镜的改进型太阳能蒸馏器（MSS）的实验研究和火用分析，以收集集中于地表水的太阳辐射。在相同的Tanta（埃及）气候条件下，对带有凸透镜的MSS和常规的单斜率SS的性能和产量进行了比较分析。同样，实验研究了使用凸透镜（有或没有黑宝石）对不锈钢进行改性对淡水产量的影响。结果表明，这些透镜将太阳辐射聚焦到盆中的水上，并增加了水玻璃的温差（T_w-T_g）。带凸透镜的MSS的淡水产量要比常规SS的高（26.64％）。除内盖表面的凸透镜外，在恒定水量30 kg的情况下，通过在盆内添加蓝宝石作为能量材料，淡水产量提高了35.55％。带镜片和青石的党卫军的最大火用效率为11.7％，而仅带镜片的党卫军的最大火用效率为4％。淡化后产生的淡水水质完全符合世界卫生组织的标准。脱盐后的总溶解固体和pH分别为22 mg / 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：海水淡化火用效率;菲涅尔透镜;太阳静止;

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