Supercooling stability of sodium acetate trihydrate composites in multiple heat storage unitsS

M. Dannemand; S. Furbo

doi:10.18462/iir.pcm.2018.0031

Supercooling stability of sodium acetate trihydrate composites in multiple heat storage unitsS

M. Dannemand, S. Furbo

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

2 Downloads (Pure)

Abstract

Keeping sodium acetate trihydrate (SAT) in supercooled state can be utilized to store heat loss free over long periods. The main risk with this technology is that the SAT may crystalize spontaneously and release the stored heat before desired.
A test rig with 10 marketed heat storage units with water and 35 kg sodium acetate trihydrate composite was built and multiple heating and cooling cycles were carried out with the units. It was monitored if the sodium acetate trihydrate remained supercooled in the 3 days storage period or if the solidification started spontaneously. The units were charged with an inlet temperature of 87⁰C, and then discharged with inlet temperatures of 14⁰C, 22⁰C, 28⁰C or 35⁰C. Spontaneous solidifications occurred more frequently during
discharge in the test cycles with lower discharge temperatures compared to higher inlet temperatures.

Original language	English
Title of host publication	Proceedings of the 12th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning
Publisher	International Institute of Refrigeration
Publication date	2018
Pages	227-231
Article number	0031
DOIs	https://doi.org/10.18462/iir.pcm.2018.0031
Publication status	Published - 2018
Event	12th IIR Conference on Phase Change Materials and Slurries for Refrigeration and Air Conditioning (PCM2018) - Orford Musique, Orford, Canada Duration: 21 May 2018 → 23 May 2018 http://pcm2018.evenement.usherbrooke.ca/index.html

Conference

Conference	12th IIR Conference on Phase Change Materials and Slurries for Refrigeration and Air Conditioning (PCM2018)
Location	Orford Musique
Country	Canada
City	Orford
Period	21/05/2018 → 23/05/2018
Internet address	http://pcm2018.evenement.usherbrooke.ca/index.html

Keywords

Sodium acetate trihydrate
Supercooling
Long-term heat storage
Experimental testing
Spontaneous crystallization

Access to Document

10.18462/iir.pcm.2018.0031

Activities

1 Conference presentations

PCM2018

Mark Dannemand (Speaker)

21 May 2018 → 23 May 2018

Activity: Talks and presentations › Conference presentations

Cite this

Dannemand, M., & Furbo, S. (2018). Supercooling stability of sodium acetate trihydrate composites in multiple heat storage unitsS. In Proceedings of the 12th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning (pp. 227-231). [0031] International Institute of Refrigeration. https://doi.org/10.18462/iir.pcm.2018.0031

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title = "Supercooling stability of sodium acetate trihydrate composites in multiple heat storage unitsS",

abstract = "Keeping sodium acetate trihydrate (SAT) in supercooled state can be utilized to store heat loss free over long periods. The main risk with this technology is that the SAT may crystalize spontaneously and release the stored heat before desired.A test rig with 10 marketed heat storage units with water and 35 kg sodium acetate trihydrate composite was built and multiple heating and cooling cycles were carried out with the units. It was monitored if the sodium acetate trihydrate remained supercooled in the 3 days storage period or if the solidification started spontaneously. The units were charged with an inlet temperature of 87⁰C, and then discharged with inlet temperatures of 14⁰C, 22⁰C, 28⁰C or 35⁰C. Spontaneous solidifications occurred more frequently duringdischarge in the test cycles with lower discharge temperatures compared to higher inlet temperatures.",

keywords = "Sodium acetate trihydrate, Supercooling, Long-term heat storage, Experimental testing, Spontaneous crystallization",

author = "M. Dannemand and S. Furbo",

year = "2018",

doi = "10.18462/iir.pcm.2018.0031",

language = "English",

pages = "227--231",

booktitle = "Proceedings of the 12th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning",

publisher = "International Institute of Refrigeration",

note = "12th IIR Conference on Phase Change Materials and Slurries for Refrigeration and Air Conditioning (PCM2018) ; Conference date: 21-05-2018 Through 23-05-2018",

url = "http://pcm2018.evenement.usherbrooke.ca/index.html",

}

Dannemand, M & Furbo, S 2018, Supercooling stability of sodium acetate trihydrate composites in multiple heat storage unitsS. in Proceedings of the 12th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning., 0031, International Institute of Refrigeration, pp. 227-231, 12th IIR Conference on Phase Change Materials and Slurries for Refrigeration and Air Conditioning (PCM2018), Orford, Canada, 21/05/2018. https://doi.org/10.18462/iir.pcm.2018.0031

Supercooling stability of sodium acetate trihydrate composites in multiple heat storage unitsS. / Dannemand, M.; Furbo, S.

Proceedings of the 12th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. International Institute of Refrigeration, 2018. p. 227-231 0031.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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AB - Keeping sodium acetate trihydrate (SAT) in supercooled state can be utilized to store heat loss free over long periods. The main risk with this technology is that the SAT may crystalize spontaneously and release the stored heat before desired.A test rig with 10 marketed heat storage units with water and 35 kg sodium acetate trihydrate composite was built and multiple heating and cooling cycles were carried out with the units. It was monitored if the sodium acetate trihydrate remained supercooled in the 3 days storage period or if the solidification started spontaneously. The units were charged with an inlet temperature of 87⁰C, and then discharged with inlet temperatures of 14⁰C, 22⁰C, 28⁰C or 35⁰C. Spontaneous solidifications occurred more frequently duringdischarge in the test cycles with lower discharge temperatures compared to higher inlet temperatures.

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