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> In Energy and Civilization, Vaclav Smil points out that in terms of embedded energy, an automobile, with over 1,000x the mass of a smartphone, has only 100x t
by davidgay 9y ago
> In Energy and Civilization, Vaclav Smil points out that in terms of embedded energy, an automobile, with over 1,000x the mass of a smartphone, has only 100x the embedded energy.
Assuming embedded energy means "battery / fuel capacity" this seems very wrong:
- typical compact car (~3000 lbs, ~1360kg) / Samsung S8 (155g) = 8800
- 50L fuel tank = 475000 Wh / Samsung S8 battery 11.55Wh = 41000
So that's ~4.6x more stored energy per kg, not 10x less.
- holri 9y agoI think he means gray energy https://en.wikipedia.org/wiki/Embodied_energy https://en.wikipedia.org/wiki/Embodied_energy
- dredmorbius 9y ago"Embedded energy" is the total energy of manufacturing and processing, not the energy storage of a device or vehicle itself. On that basis, the automobile has many, many, many times the storage of a cellphone. https://en.wikipedia.org/wiki/Embodied_energy https://en.wikipedia.org/wiki/Embodied_energy