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首页> 外文期刊>International Journal of Heat and Mass Transfer >Enhancement of gas-liquid mass transfer by nanofluids in a microchannel under Taylor flow regime
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Enhancement of gas-liquid mass transfer by nanofluids in a microchannel under Taylor flow regime

机译：泰勒流动规范下微通道中纳米流体的气液质量转移

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摘要

The gas-liquid two-phase flow and the enhancement of mass transfer by nanoparticles for the process of CO_2 absorbed by SiO_2 nanofluids were investigated in a microchannel under Taylor flow regime. The influences of the dispersed and continuous phase flow rates and particle concentration in slurry on liquid side volumetric mass transfer coefficient (K_La), mass transfer enhancement factor (E), CO_2 absorption efficiency, and pressure drop were studied systematically. The results show that the presence of nanoparticles can effectively enhance the gas-liquid mass transfer. Both K_La and pressure drop increase, while the CO_2 absorption efficiency decreases with increasing the gas-liquid flow rate ratio. Differently, K_La, CO_2 absorption efficiency and pressure drop increase with the increase of particle concentration in slurry. Considering the energy consumption and mass transfer enhancement effect, the effective mass transfer enhancement efficiency is in the range of 1.2 ～ 2.4, which shows the excellent enhancement performance of nanoparticles on gas-liquid mass transfer.
机译：通过纳米颗粒用于通过SiO_2纳米流体吸收的CO_2方法的纳米颗粒的气液两相流和肿块转移的增强。系统地研究了分散和连续相流率和颗粒浓度在浆料上的影响。结果表明，纳米颗粒的存在可以有效地增强气液传质。 K_LA和压降增加，而CO_2吸收效率随着气液流量比率的增加而降低。不同，K_LA，CO_2吸收效率和压降随着浆料中的颗粒浓度的增加而增加。考虑到能量消耗和传质增强效果，有效的传质增强效率在1.2〜2.4的范围内，显示纳米颗粒对气液传质的优异增强性能。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第9期|121435.1-121435.10|共10页
  • 作者

    Mengmeng Huang; Chunying Zhu; Taotao Fu; Youguang Ma;

  • 作者单位

    State Key Laboratory of Chemical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P.R. China;

    State Key Laboratory of Chemical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P.R. China;

    State Key Laboratory of Chemical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P.R. China;

    State Key Laboratory of Chemical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P.R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanofluids; Silicon dioxide particles; Mass transfer enhancement; Gas-liquid two-phase flow; MicroChannel;

    机译：纳米流体;二氧化硅颗粒;传质增强;气液两相流;微通道;

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