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My car charger can boil water really fast [video]

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Re: My car charger can boil water really fast [video]

#11

Post by jchw »

maccard wrote: post #10
throw0101c wrote: post #9

He mentions induction 'hot plates' towards the end, and says that they're limited to the same 1800W and 120V as kettles, but there are "commercial" portable induction stoves that are 220V and can go up to 3500 and 5000W; e.g.: * https://www.vevor.ca/induction-cooktop-c_10592/vevor-portabl... * https://www.trueinduction.com/Commercial-Single-Induction-Co... Just need a NEMA 6 plug (GFCI/AFCI per code as well probably)…

In the US. In the UK 2200W induction plates are readily available with a standard plug for ~£40, or if you spend a little more you can go to 3kW - [0] which is about the limit of most domestic circuits but is hotter than most gas hobs. If you _really_ want more than that you can go a little mental and use one with an integrated battery which can push out 10 kW [1] [0] https://www.nisbets.co.uk/nisbets-essentials-sing…

This begs the question, and I've genuinely thought this before, of why we don't just strap a battery to a kettle and end this silly debate. If it takes 5 minutes to boil a cup of water in a 1000 watt kettle, that's somewhere around 80Wh... I guess it would be kind of expensive, but couldn't you make a pretty fast kettle with some number of high discharge battery cells?

(Well honestly, I guess the real answer is outside of Internet debates most people probably just don't consider 5 minutes to boil a cup of water to be a problem.)

Re: My car charger can boil water really fast [video]

#12

Post by Nextgrid »

jchw wrote: post #11
maccard wrote: post #10

Earlier quoted context omitted.

In the US. In the UK 2200W induction plates are readily available with a standard plug for ~£40, or if you spend a little more you can go to 3kW - [0] which is about the limit of most domestic circuits but is hotter than most gas hobs. If you _really_ want more than that you can go a little mental and use one with an integrated battery which can push out 10 kW [1] [0] https://www.nisbets.co.uk/nisbets-essentials-sing…

This begs the question, and I've genuinely thought this before, of why we don't just strap a battery to a kettle and end this silly debate. If it takes 5 minutes to boil a cup of water in a 1000 watt kettle, that's somewhere around 80Wh... I guess it would be kind of expensive, but couldn't you make a pretty fast kettle with some number of high discharge battery cells? (Well honestly, I guess the real answer is outsi…

It would turn an inert device that costs a couple bucks to manufacture and has affectively no usage limit into a bomb that costs a couple hundred bucks (due to lack of economy of scale) and is limited by the battery's rated number of cycles. The battery's proximity to the heat source wouldn't help.

Re: My car charger can boil water really fast [video]

#13

Post by Nextgrid »

namibj wrote: post #4
silexia wrote: post #2

I am a farmer with giant water pumps and center pivots that run on 3 phase 480 volt power. One of my pumps has 85 horsepower. I wonder if I could wire up some sort of custom made tea kettle and get water to boil in five seconds?

3-phase electeode Boiler comes to mind. Just have it as a pass-through with a grounded shield at the end to keep you from accidentally touching dangerous voltage.

Wouldn't that cause electrolysis and make the water unsafe to drink?

Re: My car charger can boil water really fast [video]

#14

Post by kondro »

jchw wrote: post #11
maccard wrote: post #10

Earlier quoted context omitted.

In the US. In the UK 2200W induction plates are readily available with a standard plug for ~£40, or if you spend a little more you can go to 3kW - [0] which is about the limit of most domestic circuits but is hotter than most gas hobs. If you _really_ want more than that you can go a little mental and use one with an integrated battery which can push out 10 kW [1] [0] https://www.nisbets.co.uk/nisbets-essentials-sing…

This begs the question, and I've genuinely thought this before, of why we don't just strap a battery to a kettle and end this silly debate. If it takes 5 minutes to boil a cup of water in a 1000 watt kettle, that's somewhere around 80Wh... I guess it would be kind of expensive, but couldn't you make a pretty fast kettle with some number of high discharge battery cells? (Well honestly, I guess the real answer is outsi…

People that care about the time it takes to boil water just have an instant hot water boiler on (or under) their bench.

Re: My car charger can boil water really fast [video]

#16

Post by lxgr »

Great video, but coincidentally two weeks too late for me:

I never knew about the boil auto-shut-off mechanism and the overheat/"boil-dry" protection circuit being two different things in some kettles. In those, pouring out the entire water before the auto-off had a chance to kick in can cause a situation where the kettle stays on (due to not enough steam being present to trip it), but the boil-dry protection circuit continuously engages and disengages until somebody notices or the thing self-destroys – ours did the latter.

Now we have one with a switch at the bottom, and I'm hoping that due to that construction, the boil-dry protection will also disengage the switch if needed. (It also helps that the switch automatically disengages when lifting the kettle off its base.)

Re: My car charger can boil water really fast [video]

#17

Post by bot403 »

oniony wrote: post #6
wcoenen wrote: post #5

Earlier quoted context omitted.

For a small amount of water, I would be afraid of flashing the water into steam, and the resulting steam explosion.

And that's why nobody invites you to parties.

Because he keeps flash boiling steam at the party and burning the guests?

Re: My car charger can boil water really fast [video]

#18

Post by JonChesterfield »

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.

Re: My car charger can boil water really fast [video]

#19

Post by andrybak »

JojoFatsani wrote: post #8

You can run an induction range top off a nema 14-50 and be boiling in like a minute

A 2022 Technology Connections video explores various ways to boil water: https://www.youtube.com/watch?v=_yMMTVVJI4c

And a 2020 video about different voltages in the US electrical systems: https://www.youtube.com/watch?v=jMmUoZh3Hq4

Re: My car charger can boil water really fast [video]

#20

Post by drooby »

jchw wrote: post #11
maccard wrote: post #10

Earlier quoted context omitted.

In the US. In the UK 2200W induction plates are readily available with a standard plug for ~£40, or if you spend a little more you can go to 3kW - [0] which is about the limit of most domestic circuits but is hotter than most gas hobs. If you _really_ want more than that you can go a little mental and use one with an integrated battery which can push out 10 kW [1] [0] https://www.nisbets.co.uk/nisbets-essentials-sing…

This begs the question, and I've genuinely thought this before, of why we don't just strap a battery to a kettle and end this silly debate. If it takes 5 minutes to boil a cup of water in a 1000 watt kettle, that's somewhere around 80Wh... I guess it would be kind of expensive, but couldn't you make a pretty fast kettle with some number of high discharge battery cells? (Well honestly, I guess the real answer is outsi…

Impulse Labs is doing exactly this..

I believe there master plan foresees a future where batteries are more integrated with a house for decentralized grid storage. But the additional consumer advantage is better hardware - i.e cooking time.

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