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
CountryChina
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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