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Storing Energy by Heating Stones to 600 Degrees – Could Power Denmark for Hours
- londons_explore 8y agoAny heat pump has a hot and a cold side. Are they also freezing other stones? Are they cooling a river?
- Fjolsvith 8y agoI read the HN post over the weekend about Graphene coating heating to 160 degrees in sunlight [1]. Could this be used for the cool side? 1. https://news.ycombinator.com/item?id=19467542 https://news.ycombinator.com/item?id=19467542