Thermal conductivity enhancement of sodium acetate trihydrate by adding graphite powder and the effect on stability of supercooling

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    Abstract

    Sodium acetate trihydrate and graphite powder mixtures have been evaluated to investigate the influence of the graphite powder on the stability of supercooling. A sodium acetate and water mixture mixed with graphite powder was successfully supercooled at ambient indoor temperatures for five months. The graphite powder was stabilized using carboxymetyl cellulose and successfully tested in heating and supercooling cycles with no loss of performance. Thermal conductivity enhancing properties of graphite powder was shown in samples.
    Since the experiments were conducted in small scale, at 200 g per sample, large scale experiments are required to validate graphite as a thermo conductivity enhancing agent, suitable for use in seasonal heat storage applications
    utilizing SAT.
    Original languageEnglish
    JournalEnergy Procedia
    Volume70
    Pages (from-to)249-256
    Number of pages8
    ISSN1876-6102
    DOIs
    Publication statusPublished - 2015
    Event3rd International Conference on Solar Heating and Cooling for Buildings and Industry - China National Convention Center, Beijing, China
    Duration: 13 Oct 201415 Oct 2014
    Conference number: 3
    http://www.shc2014.org/cms/home.html

    Conference

    Conference3rd International Conference on Solar Heating and Cooling for Buildings and Industry
    Number3
    LocationChina National Convention Center
    Country/TerritoryChina
    CityBeijing
    Period13/10/201415/10/2014
    Internet address

    Bibliographical note

    This is an open access article under the CC BY-NC-ND license

    Keywords

    • Thermal conductivity
    • Seasonal heat storage
    • Phase change material
    • PCM
    • Sodium acetate trihydrate
    • SAT
    • Graphite
    • Carbon
    • Supercooling
    • Xanthan gum
    • X-gum
    • Carboxymethyl cellulose
    • CMC

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