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Investigation of time-temperature dependency of heat capacity enhancement in molten salt nanofluids

机译:熔盐氧化盐纳米流体热容量增强时间 - 温度依赖性研究

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摘要

In this study, the time-temperature dependency of heat capacity enhancement in molten salt nanofluids was studied experimentally. The result shows the heat capacity enhancement is directly related to the time-dependent synthesis process. Various samples of a binary salt mixture of Li2CO3-K(2)CO(3)doped with 1% Al(2)O(3)were prepared by heating and cooling at different rates (2, 4, 6, 8, and 10 degrees C min(-1)) along with the pure binary salt mixture. The samples were then tested for heat capacity using a differential scanning calorimeter. It was found that heat capacity enhancement in molten salt nanofluids depends on the heating and cooling rates during the synthesis. Recent studies have shown that the heat capacity enhancement observed could be due to the formation of dendritic structures. Transmission electron microscopy (TEM) and a pH variation method were employed to confirm the presence of dendritic nanostructures.
机译:在这项研究中,实验研究了熔盐纳米流体中热容量增强的时间 - 温度依赖性。 结果表明,热量增强与时间依赖性合成过程直接相关。 通过在不同速率下加热和冷却(2,4,6,8和10,通过加热和冷却来制备掺杂有1%Al(2)O(3)的二元盐混合物的各种样品(2)o(3)(2,4,6,8和10 高度C min(-1))以及纯二元盐混合物。 然后使用差示扫描量热计测试样品的热容量。 发现熔盐纳米流体中的热能增强取决于合成过程中的加热和冷却速率。 最近的研究表明,观察到的热容量增强可能是由于树突结构的形成。 使用透射电子显微镜(TEM)和pH变异方法来证实树突纳米结构的存在。

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  • 来源
    《RSC Advances》 |2020年第39期|共11页
  • 作者单位

    Cent Michigan Univ Sch Engn &

    Technol Mt Pleasant MI 48859 USA;

    Cent Michigan Univ Sch Engn &

    Technol Mt Pleasant MI 48859 USA;

    Cent Michigan Univ Sch Engn &

    Technol Mt Pleasant MI 48859 USA;

    Cent Michigan Univ Sch Engn &

    Technol Mt Pleasant MI 48859 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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