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

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

doi:10.1016/j.egypro.2015.02.121

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

Jakob Berg Johansen, Mark Dannemand, Weiqiang Kong, Jianhua Fan, Janne Dragsted, Simon Furbo

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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 language	English
Journal	Energy Procedia
Volume	70
Pages (from-to)	249-256
Number of pages	8
ISSN	1876-6102
DOIs	https://doi.org/10.1016/j.egypro.2015.02.121
Publication status	Published - 2015
Event	3rd International Conference on Solar Heating and Cooling for Buildings and Industry - China National Convention Center, Beijing, China Duration: 13 Oct 2014 → 15 Oct 2014 Conference number: 3 http://www.shc2014.org/cms/home.html

Conference

Conference	3rd International Conference on Solar Heating and Cooling for Buildings and Industry
Number	3
Location	China National Convention Center
Country/Territory	China
City	Beijing
Period	13/10/2014 → 15/10/2014
Internet address	http://www.shc2014.org/cms/home.html

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

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 applicationsutilizing SAT.",

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

author = "Johansen, {Jakob Berg} and Mark Dannemand and Weiqiang Kong and Jianhua Fan and Janne Dragsted and Simon Furbo",

note = "This is an open access article under the CC BY-NC-ND license; 3rd International Conference on Solar Heating and Cooling for Buildings and Industry, SHC 2014 ; Conference date: 13-10-2014 Through 15-10-2014",

year = "2015",

doi = "10.1016/j.egypro.2015.02.121",

language = "English",

volume = "70",

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T1 - Thermal conductivity enhancement of sodium acetate trihydrate by adding graphite powder and the effect on stability of supercooling

AU - Johansen, Jakob Berg

AU - Dannemand, Mark

AU - Kong, Weiqiang

AU - Fan, Jianhua

AU - Dragsted, Janne

AU - Furbo, Simon

N1 - Conference code: 3

PY - 2015

Y1 - 2015

N2 - 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 applicationsutilizing SAT.

AB - 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 applicationsutilizing SAT.

KW - Thermal conductivity

KW - Seasonal heat storage

KW - Phase change material

KW - PCM

KW - Sodium acetate trihydrate

KW - SAT

KW - Graphite

KW - Carbon

KW - Supercooling

KW - Xanthan gum

KW - X-gum

KW - Carboxymethyl cellulose

KW - CMC

U2 - 10.1016/j.egypro.2015.02.121

DO - 10.1016/j.egypro.2015.02.121

M3 - Conference article

SN - 1876-6102

VL - 70

SP - 249

EP - 256

JO - Energy Procedia

JF - Energy Procedia

T2 - 3rd International Conference on Solar Heating and Cooling for Buildings and Industry

Y2 - 13 October 2014 through 15 October 2014

ER -

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

Abstract

Conference

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Keywords

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