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首页> 外文期刊>Heat Transfer Engineering >Thermal Performance Enhancement of L-Shaped Microgrooved Heat Pipe Containing Water-Based Al_2O_3 Nanofluids
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Thermal Performance Enhancement of L-Shaped Microgrooved Heat Pipe Containing Water-Based Al_2O_3 Nanofluids

机译：包含水基Al_2O_3纳米流体的L形微槽热管的热性能增强

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摘要

An experimental study was performed to investigate the thermal performance of an L-shaped grooved heat pipe with cylindrical cross section, which contained 0.5 wt% water-based Al_2O_3 nanofluid as the working fluid. The transient performance of the heat pipe and the effect of cooling water temperature on the heat transfer characteristics of the heat pipe were investigated. The outer diameter and the length of the heat pipe were 6 mm and 220 mm, respectively. Experimental results revealed that the temperature of the cooling water has a significant effect on the thermal resistance of the heat pipe containing nanofluids as its working fluid. By increasing the cooling water temperature from 5℃ to 27.5℃, the thermal resistance decreases by approximately 40%. At the same charge volume, test results indicated an average reduction of 30% in thermal resistance of heat pipes with nanofluid as compared with heat pipe containing pure water. For transient conditions, unsteady state time for nanofluids was reduced by approximately 28%, when compared with water as the working fluid.
机译：进行了实验研究，以研究含有0.5 wt％的水基Al_2O_3纳米流体作为工作流体的具有圆柱形横截面的L形带槽热管的热性能。研究了热管的瞬态性能和冷却水温度对热管传热特性的影响。热管的外径和长度分别为6毫米和220毫米。实验结果表明，冷却水的温度对以纳米流体为工作流体的热管的热阻有显着影响。通过将冷却水温度从5℃升高到27.5℃，热阻降低约40％。在相同的电荷量下，测试结果表明，与包含纯水的热管相比，具有纳米流体的热管的热阻平均降低了30％。对于瞬态条件，与水作为工作流体相比，纳米流体的非稳态时间减少了约28％。

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  • 来源
    《Heat Transfer Engineering》 |2015年第8期|462-470|共9页
  • 作者

    TOORAJ YOUSEFI; MEHDI HEIDARI;

  • 作者单位

    Mechanical Engineering Department, Kermanshah Razi University, Kermanshah, Iran;

    Mechanical Engineering Department, Tehran Azad University, South Branch, Tehran, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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