Latent thermal storage using sodium hydroxide-based molten salts - Demonstration of 30kWh-scale storage units

Yoshiyuki Abe; Yoshio Takahashi; Kotaro Tanaka; Katsuhiko Kanari; Ryuji Sakamoto; Masayuki Kamimoto; Takeo Ozawa

doi:10.1252/kakoronbunshu.18.37

Latent thermal storage using sodium hydroxide-based molten salts - Demonstration of 30kWh-scale storage units

Yoshiyuki Abe, Yoshio Takahashi, Kotaro Tanaka, Katsuhiko Kanari, Ryuji Sakamoto, Masayuki Kamimoto, Takeo Ozawa

Research output: Contribution to journal › Article

Abstract

The present paper describes experimental results of the operation of 30kWh-scale molten salt latent thermal storage units using a eutectic of sodium hydroxide and sodium nitrate which is suitable for thermal storage around 250°C. The main problems of molten salt as a latent thermal storage material are its large volume change on phase change and its feasibility for use with structural materials. Using mild steel, two different U-tube storage units were built for testing heat transfer performance, structural feasibility and compatibility with the molten salt. From thorough and comprehensive material analyses after 1,000 melting-freezing (charge-discharge) cycle tests, it was concluded that the present storage unit structure (horizontal U-tube and multiple-path type) and material selection were fairly feasible for a latent thermal storage unit with this particular molten salt.

Original language	English
Pages (from-to)	37-43
Number of pages	7
Journal	Kagaku Kogaku Ronbunshu
Volume	18
Issue number	1
DOIs	https://doi.org/10.1252/kakoronbunshu.18.37
Publication status	Published - 1992
Externally published	Yes

Keywords

Corrosion
Energy
High temperature
Latent heat
Molten salt
Sodium hydroxide
Thermal storage

ASJC Scopus subject areas

Chemical Engineering(all)
Chemistry(all)

Access to Document

10.1252/kakoronbunshu.18.37

Fingerprint Dive into the research topics of 'Latent thermal storage using sodium hydroxide-based molten salts - Demonstration of 30kWh-scale storage units'. Together they form a unique fingerprint.

Cite this

Abe, Y., Takahashi, Y., Tanaka, K., Kanari, K., Sakamoto, R., Kamimoto, M., & Ozawa, T. (1992). Latent thermal storage using sodium hydroxide-based molten salts - Demonstration of 30kWh-scale storage units. Kagaku Kogaku Ronbunshu, 18(1), 37-43. https://doi.org/10.1252/kakoronbunshu.18.37

@article{7940119343fb4730b20fb85d293db3ba,

title = "Latent thermal storage using sodium hydroxide-based molten salts - Demonstration of 30kWh-scale storage units",

abstract = "The present paper describes experimental results of the operation of 30kWh-scale molten salt latent thermal storage units using a eutectic of sodium hydroxide and sodium nitrate which is suitable for thermal storage around 250°C. The main problems of molten salt as a latent thermal storage material are its large volume change on phase change and its feasibility for use with structural materials. Using mild steel, two different U-tube storage units were built for testing heat transfer performance, structural feasibility and compatibility with the molten salt. From thorough and comprehensive material analyses after 1,000 melting-freezing (charge-discharge) cycle tests, it was concluded that the present storage unit structure (horizontal U-tube and multiple-path type) and material selection were fairly feasible for a latent thermal storage unit with this particular molten salt.",

keywords = "Corrosion, Energy, High temperature, Latent heat, Molten salt, Sodium hydroxide, Thermal storage",

author = "Yoshiyuki Abe and Yoshio Takahashi and Kotaro Tanaka and Katsuhiko Kanari and Ryuji Sakamoto and Masayuki Kamimoto and Takeo Ozawa",

year = "1992",

doi = "10.1252/kakoronbunshu.18.37",

language = "English",

volume = "18",

pages = "37--43",

journal = "Kagaku Kogaku Ronbunshu",

issn = "0386-216X",

publisher = "Society of Chemical Engineers, Japan",

number = "1",

}

TY - JOUR

T1 - Latent thermal storage using sodium hydroxide-based molten salts - Demonstration of 30kWh-scale storage units

AU - Abe, Yoshiyuki

AU - Takahashi, Yoshio

AU - Tanaka, Kotaro

AU - Kanari, Katsuhiko

AU - Sakamoto, Ryuji

AU - Kamimoto, Masayuki

AU - Ozawa, Takeo

PY - 1992

Y1 - 1992

N2 - The present paper describes experimental results of the operation of 30kWh-scale molten salt latent thermal storage units using a eutectic of sodium hydroxide and sodium nitrate which is suitable for thermal storage around 250°C. The main problems of molten salt as a latent thermal storage material are its large volume change on phase change and its feasibility for use with structural materials. Using mild steel, two different U-tube storage units were built for testing heat transfer performance, structural feasibility and compatibility with the molten salt. From thorough and comprehensive material analyses after 1,000 melting-freezing (charge-discharge) cycle tests, it was concluded that the present storage unit structure (horizontal U-tube and multiple-path type) and material selection were fairly feasible for a latent thermal storage unit with this particular molten salt.

AB - The present paper describes experimental results of the operation of 30kWh-scale molten salt latent thermal storage units using a eutectic of sodium hydroxide and sodium nitrate which is suitable for thermal storage around 250°C. The main problems of molten salt as a latent thermal storage material are its large volume change on phase change and its feasibility for use with structural materials. Using mild steel, two different U-tube storage units were built for testing heat transfer performance, structural feasibility and compatibility with the molten salt. From thorough and comprehensive material analyses after 1,000 melting-freezing (charge-discharge) cycle tests, it was concluded that the present storage unit structure (horizontal U-tube and multiple-path type) and material selection were fairly feasible for a latent thermal storage unit with this particular molten salt.

KW - Corrosion

KW - Energy

KW - High temperature

KW - Latent heat

KW - Molten salt

KW - Sodium hydroxide

KW - Thermal storage

UR - http://www.scopus.com/inward/record.url?scp=84945539853&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84945539853&partnerID=8YFLogxK

U2 - 10.1252/kakoronbunshu.18.37

DO - 10.1252/kakoronbunshu.18.37

M3 - Article

AN - SCOPUS:84945539853

VL - 18

SP - 37

EP - 43

JO - Kagaku Kogaku Ronbunshu

JF - Kagaku Kogaku Ronbunshu

SN - 0386-216X

IS - 1

ER -