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by gus_massa
31 days ago
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It has been discussed a few times, in particular https://news.ycombinator.com/item?id=48171906 (57 points | 5 days ago | 46 comments) > Energy density is 1.65 MJ/kg, beating lithium-ion (~0.9 MJ/kg) Lithium-ion produce electricity, that can be used by a heat pump to get a greater than 100% efficiency measured in heat/electricity. Heat pumps have like 300% of efficiency, sometimes more, but let's assume only a 200%. In that cases this molecule -> 1.65 MJ/kg (heat) lithium-ion -> 0.9 MJ/kg (electricity) -> 1.8 MJ/kg (heat) |
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