Thermal Conductivity Enhancement of Sodium Acetate Trihydrate by Adding Graphite Powder and the Effect on Stability of Supercooling | Zendy

Jakob Berg Johansen | Zendy; Mark Dannemand | Zendy; Weiqiang Kong | Zendy; Jianhua Fan | Zendy; Janne Dragsted | Zendy; Simon Furbo | Zendy

Open Access

Thermal Conductivity Enhancement of Sodium Acetate Trihydrate by Adding Graphite Powder and the Effect on Stability of Supercooling

Author(s) -

Jakob Berg Johansen,

Mark Dannemand,

Weiqiang Kong,

Jianhua Fan,

Janne Dragsted,

Simon Furbo

Publication year - 2015

Publication title -

energy procedia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.474

H-Index - 81

ISSN - 1876-6102

DOI - 10.1016/j.egypro.2015.02.121

Subject(s) - supercooling , graphite , materials science , thermal conductivity , thermal stability , cellulose acetate , sodium , conductivity , sodium acetate , chemical engineering , composite material , chemistry , chromatography , cellulose , metallurgy , organic chemistry , thermodynamics , physics , engineering

Sodium acetate trihydrate and graphite powdermixtures have been evaluated toinvestigate the influence of the graphite powder on the stability of supercooling. A sodium acetate and water mixturemixed 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.

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