Design optimization of a latent heat storage using sodium acetate trihydrate Article Swipe
Gang Wang
,
Zhirong Liao
,
Chao Xu
,
Gerald Englmair
,
Weiqiang Kong
,
Jianhua Fan
,
Gaosheng Wei
,
Simon Furbo
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1016/j.est.2022.104798
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1016/j.est.2022.104798
This paper presents numerical investigations on a heat storage utilizing sodium acetate trihydrate (SAT) as phase change material (PCM). The heat storage can be used both in short-term and in long-term by utilizing stable supercooling of SAT. The store contains 137.8 kg PCM and 75 L water. Based on a validated CFD model, the flow conditions of the heat storage was analyzed. Uneven flow distribution inside the heat storage was revealed. Three design optimization methods were investigated to eliminate the uneven flow distribution. The results were analyzed using key performance indicators inclusive charging time, charged heat, degree of thermal stratification and the mixing of the heat storage. The influence of flow direction, inlet size and addition of a porous plate on the thermal performance of the heat storage were elucidated. Concerning flow direction, after moving the inlet from the bottom to the top of the storage, the time needed to completely melt the PCM was shortened by 50%. The best storage design was identified: For charge of the storage, the top inlet should be used, while for discharge, the bottom inlet should be used. Concerning the size of inlet opening, the charging time of the heat storage was reduced from 75 min to 51 min by using 3.0 mm radius instead of a 11.2 mm inlet. The small inlet size (3.0–8.0 mm) was suggested to make a uniform temperature distribution inside the heat storage. Short circuit was completely eliminated by adding a porous plate with 10% porosity. The charging time of the heat storage was shortened 28% by adding the porous plate. Finally, recommendations were proposed for different applications of the heat storage. The findings of the paper serve as a good basis for designers and manufacturers of PCM heat storages.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1016/j.est.2022.104798
- OA Status
- hybrid
- Cited By
- 10
- References
- 34
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4280595118
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4280595118Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1016/j.est.2022.104798Digital Object Identifier
- Title
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Design optimization of a latent heat storage using sodium acetate trihydrateWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-05-11Full publication date if available
- Authors
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Gang Wang, Zhirong Liao, Chao Xu, Gerald Englmair, Weiqiang Kong, Jianhua Fan, Gaosheng Wei, Simon FurboList of authors in order
- Landing page
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https://doi.org/10.1016/j.est.2022.104798Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
-
hybridOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1016/j.est.2022.104798Direct OA link when available
- Concepts
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Thermal energy storage, Inlet, Phase-change material, Materials science, Latent heat, Mechanics, Thermodynamics, Porosity, Thermal, Chemistry, Mechanical engineering, Composite material, Engineering, PhysicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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10Total citation count in OpenAlex
- Citations by year (recent)
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2025: 3, 2024: 3, 2023: 2, 2022: 2Per-year citation counts (last 5 years)
- References (count)
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34Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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