this post was submitted on 27 Aug 2023
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[โ€“] Edgelord_Of_Tomorrow@lemmy.world 1 points 1 year ago (1 children)

To run a heat engine you need a temperature difference in order to generate work. When your system generates heat as a byproduct you can amplify the amount of work by increasing the temperature difference. This is how the cold block "stores" energy.

What's your source on 90% efficiency? Here it's stated 35% max.

[โ€“] IndefiniteBen@feddit.nl 1 points 1 year ago

I'm just talking about storage. Molten salt energy storage is mentioned here: https://en.wikipedia.org/wiki/Thermal_energy_storage