首页> 外文期刊>绿色能源与环境:英文版 >Highly efficient energy harvest via external rotating magnetic field for oil based nanofluid direct absorption solar collector
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Highly efficient energy harvest via external rotating magnetic field for oil based nanofluid direct absorption solar collector

机译:基于油的纳米流体直接吸收太阳能收集器的外旋磁场高效能量收获

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摘要

Nanofluids based direct absorption solar collectors(DASCs) are considered as the important alternative for further improve the utilization of solar energy. However the low-quality energy and aggregation of nanoparticles obstructs their large-scale application. In this work, a new method of using magnetic nanofluids in DASCs is proposed. By this method, not only high-quality energy is got as well as the problems of blockage and corrosion in heat exchanger are well avoided. The result shows that the maximum temperature can reach 98°C under 3 solar irradiations and the photothermal conversion efficiency can be further increased by 12.8% when the concentration is 500 ppm after adding an external rotating magnetic field. The highest viscosity of working fluid reduced by 21% when the concentration is 500 ppm at 95°C after separating the Fe_(3)O_(4)@C nanoparticles from the nanofluids via magnetic separation technology. Meanwhile, the obtained pure base liquids with high temperature flow to heat exchanger, which also reduces the flow resistance in pipeline and avoids the problems such as blockage and corrosion in heat exchanger. This research promotes a new way for the efficient utilization of solar energy.
机译:基于纳米流体的直接吸收太阳能收集器(DASCS)被认为是进一步提高太阳能利用的重要替代方案。然而,纳米粒子的低质量能量和聚集阻碍了它们的大规模应用。在这项工作中,提出了一种在DASCS中使用磁性纳米流体的新方法。通过这种方法,不仅具有高质量的能量以及热交换器中的堵塞问题和腐蚀的问题也很避免。结果表明,在添加外部旋转磁场后浓度为500ppm,最大温度可以达到98°C,在3太阳照射下达到98°C,并且在浓度为500ppm后,可以进一步增加12.8%。当通过磁分离技术将Fe_(3)O_(4)颗粒分离在95℃之后,在95℃下,从纳米流体分离纳米流体,在95℃下,工作流体的最高粘度降低了21%。同时,获得的纯基液体具有高温流向热交换器,这也降低了管道中的流动阻力,并避免了热交换器中堵塞和腐蚀等问题。本研究促进了一种新的太阳能利用方式。

著录项

  • 来源
    《绿色能源与环境:英文版》 |2021年第002期|P.298-307|共10页
  • 作者单位

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 China;

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 China;

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 ChinaResearch Center of Resource Recycling Science and Engineering Shanghai Polytechnic Universityg Shanghai 201209 China;

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 China;

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 China;

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 China;

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 ChinaResearch Center of Resource Recycling Science and Engineering Shanghai Polytechnic Universityg Shanghai 201209 China;

    School of Emvironmental and Mate rials Engineering College of Engineering Shanghai Polytechnic University Shanghail 201209 ChinaShanghai Key Laboratory of Engineering Mate rials Application and Evaluation Collge of Engineering Shanghai Polyteclmic University Shanghai 201209 China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 工程材料学;
  • 关键词

    Direct absorption solar collector; Magnetic Fe_(3)O_(4)@C-oil nanofluids; Magnetic separation technology; High-quality energy;

    机译:直接吸收太阳能收集器;磁FE_(3)O_(4)o_(4)@ C-油纳米流体;磁分离技术;高质量的能量;
  • 入库时间 2022-08-19 04:58:37
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