Convective heat transfer behaviour of water-ethylene glycol-mixture with silver nanoparticles under laminar flow conditions

C. Selvam, D. Mohan Lal, Sivasankaran Harish

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    2 Citations (Scopus)

    Abstract

    In this work, we report the forced convective heat transfer performance and pressure drop of aqueous ethylene glycol seeded with silver nanoparticles for low temperature applications. Experiments were performed in a tube in tube counter-current heat exchanger using silver nanofluid as the hot fluid under laminar flow conditions. In this study, water-ethylene glycol mixture with 70:30 volume percent was used as the base medium. Silver nanofluid was allowed to flow through inner tube of the heat exchanger for varying nanofluid mass flow rates from 5 g/s to 30 g/s and three inlet temperatures of nanofluid viz. 2 °C, 5 °C and 10 °C. The increments in thermal diffusivity and viscosity are found to be ~37 % and ~69 % at 0.45 vol%, respectively. The enhancement in heat transfer coefficient at highest mass flow rate is found to be ~94 % for 0.45 vol%. The pressure drop in the silver nanofluid increases with respect to increase in volume percentage of nanoparticles due to increase in viscosity.

    Original languageEnglish
    Pages (from-to)2191-2199
    Number of pages9
    JournalJournal of Mechanical Science and Technology
    Volume32
    Issue number5
    DOIs
    Publication statusPublished - May 1 2018

    All Science Journal Classification (ASJC) codes

    • Mechanics of Materials
    • Mechanical Engineering

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