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My car charger can boil water really fast [video]

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77 points zdw | 2 comments | 28 Nov 25 02:58 UTC | HN request time: 0s | source
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JonChesterfield ◴[07 Dec 25 13:21 UTC] No.46181494[source]▶
I'm sure there was a period where one couldn't find a 3kW kettle in the UK on power efficiency grounds, one was supposed to run a 2kW one instead to save the planet. But now when I search I find 3kW models again. So either that was a nightmare of some sort or sanity has prevailed.

Chatgpt thinks this was threatened in 2010 then postponed in 2016 then cancelled, which vaguely aligns with my timeline of interest in tea.

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1. poizan42 ◴[07 Dec 25 13:35 UTC] No.46181581[source]▶
But the more powerful kettle should be slightly more efficient[0] because there is less time for heat to escape from the kettle while the water is being heated.

[0] Energy efficiency at boiling the water. A kettle is always 100% effective at making heat.

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2. throwaway198846 ◴[07 Dec 25 13:52 UTC] No.46181695[source]▶
You could use vacuum like in a vacuum flask. In fact to my surprise the product seems to already exists although its selling point is how long it holds water hot after boiling and not its efficiency.