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首页> 外文期刊>Heat Transfer Engineering >An Experimental Transient Response of a Heat Exchanger with the Al_2O_3/Water Nanofluid Mass Flow and Temperature Step Variations
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An Experimental Transient Response of a Heat Exchanger with the Al_2O_3/Water Nanofluid Mass Flow and Temperature Step Variations

机译：具有Al_2O_3 /水纳米流体质量流量和温度步骤变化的热交换器的实验瞬态响应

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摘要

Experimental study on using nanofluid in a cross-flow minichannel heat exchanger (MICHX) to investigate its transient behavior was completed. Step changes of temperature and flow rate in the hot liquid were applied and the dynamic performance of the heat exchanger was analyzed. Results of nanofluid were compared to water and demonstrate an enhancement of 19% in heat transfer when using 2.5 wt% concentration Al_2O_3/water nanofluid. Parameters such as the transient effectiveness, heat balance, response time, and outlet temperatures of both liquid and air were also studied. The empirical correlations are developed for the temperature and mass flow step variations in a MICHX to predict the hot fluid outlet temperature in the dimensionless parameters. Nanofluid showed shorter response time for temperature and mass flow step changes compared to water. The outcome of this work is of interest to designers for process control, thermal testing, characterization, and performance enhancement of compact heat exchangers.
机译：纳米流体在交叉流动迷你沟热交换器（MICHX）中使用纳米流体的实验研究完成了研究其瞬态行为。施加了热液体温度和流速的步骤变化，分析了热交换器的动态性能。将纳米流体的结果与水进行比较，并且在使用2.5wt％浓度Al_2O_3 /水纳米流体时，在热传递中表现出19％的增强。还研究了诸如液体和空气的瞬态有效性，热平衡，响应时间和出口温度的参数。为MICHX中的温度和质量流动步骤变化开发了经验相关性，以预测无量纲参数中的热流体出口温度。与水相比，纳米流体显示出温度和质量流动步骤的响应时间较短。这项工作的结果对于设计人员来说是用于过程控制，热测试，表征和紧凑型热交换器的性能增强的设计者。

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  • 来源
    《Heat Transfer Engineering》 |2021年第14期|1002-1023|共22页
  • 作者

    Shahram Fotowat; Serena Askar; Amir Fartaj;

  • 作者单位

    Department of Mechanical Automotive and Materials Engineering University of Windsor Windsor ON Canada;

    Department of Mechanical Automotive and Materials Engineering University of Windsor Windsor ON Canada;

    Department of Mechanical Automotive and Materials Engineering University of Windsor Windsor ON Canada;

  • 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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