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 | |
| Publication status | Published - 1992 |
| Externally published | Yes |
Keywords
- Corrosion
- Energy
- High Temperature
- Latent Heat
- Molten Salt
- Sodium Hydroxide
- Thermal Storage
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)