Microfluidic energy conversion by application of two phase flow

Yanbo Xie

    Research output: ThesisPhD Thesis - Research UT, graduation UT

    92 Downloads (Pure)

    Abstract

    We investigated the energy conversion performance by the streaming potential using totally different approaches. By introducing gas bubbles, which can be considered as perfect insulators, the internal electrical resistance of the system can be increased, decreasing the conduction current. Following this approach, according to an equivalent circuit analysis, experimentally we achieved over 163 times efficiency increase compared with single water phase flow. The absolute efficiency however was still quite low, due to the corner conduction and high bulk conductivity of the solution used, as well as the use of microchannels. Hydrophobic surfaces are expected to further increase the energy conversion efficiency according to our preliminary experiments.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • University of Twente
    Supervisors/Advisors
    • van den Berg, Albert , Supervisor
    • Eijkel, Jan C.T., Supervisor
    Thesis sponsors
    Award date26 Sep 2013
    Place of PublicationZutphen
    Publisher
    Print ISBNs978-90-365-0744-8
    DOIs
    Publication statusPublished - 26 Sep 2013

    Fingerprint

    energy conversion
    two phase flow
    conduction
    energy conversion efficiency
    microchannels
    electrical resistance
    equivalent circuits
    bubbles
    insulators
    conductivity
    gases
    water

    Keywords

    • EWI-23688
    • IR-87267
    • METIS-297541

    Cite this

    Xie, Yanbo. / Microfluidic energy conversion by application of two phase flow. Zutphen : Universiteit Twente, 2013. 144 p.
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    abstract = "We investigated the energy conversion performance by the streaming potential using totally different approaches. By introducing gas bubbles, which can be considered as perfect insulators, the internal electrical resistance of the system can be increased, decreasing the conduction current. Following this approach, according to an equivalent circuit analysis, experimentally we achieved over 163 times efficiency increase compared with single water phase flow. The absolute efficiency however was still quite low, due to the corner conduction and high bulk conductivity of the solution used, as well as the use of microchannels. Hydrophobic surfaces are expected to further increase the energy conversion efficiency according to our preliminary experiments.",
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    Xie, Y 2013, 'Microfluidic energy conversion by application of two phase flow', Doctor of Philosophy, University of Twente, Zutphen. https://doi.org/10.3990/1.9789036507448

    Microfluidic energy conversion by application of two phase flow. / Xie, Yanbo.

    Zutphen : Universiteit Twente, 2013. 144 p.

    Research output: ThesisPhD Thesis - Research UT, graduation UT

    TY - THES

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    AU - Xie, Yanbo

    PY - 2013/9/26

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    AB - We investigated the energy conversion performance by the streaming potential using totally different approaches. By introducing gas bubbles, which can be considered as perfect insulators, the internal electrical resistance of the system can be increased, decreasing the conduction current. Following this approach, according to an equivalent circuit analysis, experimentally we achieved over 163 times efficiency increase compared with single water phase flow. The absolute efficiency however was still quite low, due to the corner conduction and high bulk conductivity of the solution used, as well as the use of microchannels. Hydrophobic surfaces are expected to further increase the energy conversion efficiency according to our preliminary experiments.

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    KW - IR-87267

    KW - METIS-297541

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    DO - 10.3990/1.9789036507448

    M3 - PhD Thesis - Research UT, graduation UT

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    CY - Zutphen

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