Encapsulated Phase Change Material Slurry Flow in Manifold Microchannels

    Authors

    S. Kuravi; J. H. Du;L. C. Chow

    Comments

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    Abbreviated Journal Title

    J. Thermophys. Heat Transf.

    Keywords

    CONVECTION HEAT-TRANSFER; CHANGE MATERIAL SUSPENSIONS; CIRCULAR DUCTS; PERFORMANCE; PARTICLES; LIQUID; FLUID; Thermodynamics; Engineering, Mechanical

    Abstract

    The heat transfer performance of water-based microencapsulated phase change material slurry (particle size 5 mu m) flow inside manifold microchannels of hydraulic diameter 170 mu m was experimentally and numerically investigated. Slurry performance was poorer compared with pure fluid due to the large size of particles used and lower thermal conductivity of slurry compared with water. A parametric study was performed with nanoencapsulated phase change material slurry flow (particle size of 100 nm) in microchannels of hydraulic diameters 170 and 47 mu m. Two different base fluids were considered and the heat transfer enhancement of slurry with various particle mass concentrations compared with its base fluid was presented. For developing flows, the performance of phase change material slurry depends on various parameters such as base-fluid thermal conductivity, channel dimensions, amount of phase change material melted, and particle mass concentration. In the case of manifold microchannel heat sinks, where the microchannel flowpath is much shorter compared with traditional microchannels, using higher-thermal-conductivity phase change material, narrower channels, smaller particles, and optimum parameters will aid in obtaining better thermal performance of phase change material slurry compared with pure fluid.

    Journal Title

    Journal of Thermophysics and Heat Transfer

    Volume

    24

    Issue/Number

    2

    Publication Date

    1-1-2010

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    364

    Last Page

    373

    WOS Identifier

    WOS:000277096200016

    ISSN

    0887-8722

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