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

研究成果: Article

抜粋

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.

元の言語English
ページ(範囲)37-43
ページ数7
ジャーナルKagaku Kogaku Ronbunshu
18
発行部数1
DOI
出版物ステータスPublished - 1992
外部発表Yes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

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