But this would stop you getting the sand hotter than 100c - which is one of the ... | Hacker News

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bb123 on March 14, 2024 | parent | context | favorite | on: Giant 'sand battery' holds a week's heat for a who...

But this would stop you getting the sand hotter than 100c - which is one of the main advantages of using sand over water for heat storage.

kgabis on March 14, 2024 [–]

You can make it work under pressure and/or add salt.

omegabravo on March 14, 2024 | [–]

You would need a pressure vessel and corrosion resistance, and potentially a pump driving up the cost.

solar panel with sand is mechanically and electrically much simpler

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