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timelesssmidgen t1_j0c11bs wrote

Reply to comment by Stopa42 in 5 second toaster and kettle by F1NNTORIO

How about with a big old capacitor inside the kettle which trickle charges in between use?

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timbe3 t1_j0ccj9t wrote

For the amount of energy needed... Wouldn't that requires a capacitor bank the size of a car?

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timelesssmidgen t1_j0cez2w wrote

Wikipedia tells me super capacitor energy densities are around 0.01 MJ/kg (no idea if that's reasonable for consumer grade stuff) So to store 336 kJ you'd need 34 kg of super capacitor. Not nothin' but if you really want that cuppa right now you might go in for it. Electrolytic capacitors are more like 0.00001 MJ/kg, requiring 34 thousand kg. So... I won't be installing that under my sink.

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