Development of seasonal heat storage based on stable supercooling of a sodium acetate water mixture

Simon Furbo; Jianhua Fan; Elsa Andersen; Ziqian Chen; Bengt Perers

doi:10.1016/j.egypro.2012.11.031

Development of seasonal heat storage based on stable supercooling of a sodium acetate water mixture

Simon Furbo, Jianhua Fan, Elsa Andersen, Ziqian Chen, Bengt Perers

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

A number of heat storage modules for seasonal heat storages based on stable supercooling of a sodium acetate water mixture have been tested by means of experiments in a heat storage test facility. The modules had different volumes and designs. Further, different methods were used to transfer heat to and from the sodium acetate water mixture in the modules.

By means of the experiments:
• The heat exchange capacity rates to and from the sodium acetate water mixture in the heat storage modules were determined for different volume flow rates.
• The heat content of the heat storage modules were determined.
• The reliability of the supercooling was elucidated for the heat storage modules for different operation conditions.
• The reliability of a cooling method used to start solidification of the supercooled sodium acetate water mixture was elucidated. The method is making use of boiling CO2 in a small tank in good thermal contact with the outer
surface of the heat storage module.
• Experience on operation of the heat storage modules was gained.

Based on the investigations recommendations for future development of a seasonal heat storage based on stable supercooling of a sodium acetate water mixture are given.

Original language	English
Journal	Energy Procedia
Volume	30
Pages (from-to)	260-269
ISSN	1876-6102
DOIs	https://doi.org/10.1016/j.egypro.2012.11.031
Publication status	Published - 2012
Event	1st International Conference on Solar Heating and Cooling for Buildings and Industry - San Francisco, United States Duration: 9 Jul 2012 → 11 Jul 2012 Conference number: 1

Conference

Conference	1st International Conference on Solar Heating and Cooling for Buildings and Industry
Number	1
Country/Territory	United States
City	San Francisco
Period	09/07/2012 → 11/07/2012

Keywords

PCM
Sodium acetate
Supercooling
Seasonal heat storage
Heat storage modules
Laboratory tests

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10.1016/j.egypro.2012.11.031

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Full text

IEA Task 42: Compact Thermal Energy Storage: Material development and System Integration
Fan, J. (Project Participant), Furbo, S. (Project Manager), Nielsen, E. N. N. (Project Participant) & Chen, Z. (Project Participant)
Miljøstyrelsen
01/01/2009 → 31/12/2011
Project: Research

Cite this

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title = "Development of seasonal heat storage based on stable supercooling of a sodium acetate water mixture",

abstract = "A number of heat storage modules for seasonal heat storages based on stable supercooling of a sodium acetate water mixture have been tested by means of experiments in a heat storage test facility. The modules had different volumes and designs. Further, different methods were used to transfer heat to and from the sodium acetate water mixture in the modules.By means of the experiments:• The heat exchange capacity rates to and from the sodium acetate water mixture in the heat storage modules were determined for different volume flow rates.• The heat content of the heat storage modules were determined.• The reliability of the supercooling was elucidated for the heat storage modules for different operation conditions.• The reliability of a cooling method used to start solidification of the supercooled sodium acetate water mixture was elucidated. The method is making use of boiling CO2 in a small tank in good thermal contact with the outer surface of the heat storage module.• Experience on operation of the heat storage modules was gained.Based on the investigations recommendations for future development of a seasonal heat storage based on stable supercooling of a sodium acetate water mixture are given.",

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author = "Simon Furbo and Jianhua Fan and Elsa Andersen and Ziqian Chen and Bengt Perers",

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AU - Furbo, Simon

AU - Fan, Jianhua

AU - Andersen, Elsa

AU - Chen, Ziqian

AU - Perers, Bengt

N1 - Conference code: 1

PY - 2012

Y1 - 2012

N2 - A number of heat storage modules for seasonal heat storages based on stable supercooling of a sodium acetate water mixture have been tested by means of experiments in a heat storage test facility. The modules had different volumes and designs. Further, different methods were used to transfer heat to and from the sodium acetate water mixture in the modules.By means of the experiments:• The heat exchange capacity rates to and from the sodium acetate water mixture in the heat storage modules were determined for different volume flow rates.• The heat content of the heat storage modules were determined.• The reliability of the supercooling was elucidated for the heat storage modules for different operation conditions.• The reliability of a cooling method used to start solidification of the supercooled sodium acetate water mixture was elucidated. The method is making use of boiling CO2 in a small tank in good thermal contact with the outer surface of the heat storage module.• Experience on operation of the heat storage modules was gained.Based on the investigations recommendations for future development of a seasonal heat storage based on stable supercooling of a sodium acetate water mixture are given.

AB - A number of heat storage modules for seasonal heat storages based on stable supercooling of a sodium acetate water mixture have been tested by means of experiments in a heat storage test facility. The modules had different volumes and designs. Further, different methods were used to transfer heat to and from the sodium acetate water mixture in the modules.By means of the experiments:• The heat exchange capacity rates to and from the sodium acetate water mixture in the heat storage modules were determined for different volume flow rates.• The heat content of the heat storage modules were determined.• The reliability of the supercooling was elucidated for the heat storage modules for different operation conditions.• The reliability of a cooling method used to start solidification of the supercooled sodium acetate water mixture was elucidated. The method is making use of boiling CO2 in a small tank in good thermal contact with the outer surface of the heat storage module.• Experience on operation of the heat storage modules was gained.Based on the investigations recommendations for future development of a seasonal heat storage based on stable supercooling of a sodium acetate water mixture are given.

KW - PCM

KW - Sodium acetate

KW - Supercooling

KW - Seasonal heat storage

KW - Heat storage modules

KW - Laboratory tests

U2 - 10.1016/j.egypro.2012.11.031

DO - 10.1016/j.egypro.2012.11.031

M3 - Conference article

SN - 1876-6102

VL - 30

SP - 260

EP - 269

JO - Energy Procedia

JF - Energy Procedia

T2 - 1st International Conference on Solar Heating and Cooling for Buildings and Industry

Y2 - 9 July 2012 through 11 July 2012

ER -

Development of seasonal heat storage based on stable supercooling of a sodium acetate water mixture

Abstract

Conference

Keywords

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Projects

IEA Task 42: Compact Thermal Energy Storage: Material development and System Integration

Cite this