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My car charger can boil water really fast [video]
- silexia 11mo agoI 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?
- 4gotunameagain 11mo agoFor sure, you could use six 240V heating elements wired in series in three pairs to get their rated power. Of you can wire 240V elements directly to 480V to quadruple the power, as shown in the video ;)
- namibj 11mo ago3-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.
- Nextgrid 11mo agoWouldn't that cause electrolysis and make the water unsafe to drink?
- malfist 11mo agoWhat do you imagine happens to water when it undergoes electrolysis?
- Nextgrid 11mo agoIt breaks down into its individual components which escape as gases. That alone shouldn't make the remaining water toxic, assuming a perfect reaction. But I guess the reaction isn't perfect due to things like impurities, the metals used as electrodes and so on?
- wcoenen 11mo agoFor a small amount of water, I would be afraid of flashing the water into steam, and the resulting steam explosion.
- oniony 11mo agoAnd that's why nobody invites you to parties.
- bot403 11mo agoBecause he keeps flash boiling steam at the party and burning the guests?
- mesrik 11mo agoWell, that's about what happens in Sauna with electric stove. In Finland we do it every day and have done decades already. Those who may not know electric stoves have been about fifty years common use at least in urban environments. Stoves have anything from three, one in each of three phase current used heating elements (resistor coils) 400V 6-8 kW power draw commonly in small house stoves and 2-3 times that swimming baths saunas stoves. While sitting topmost sauna benches bathing, we throw fresh water from bucket with a sauna laddle (saunakauha) water to stove(s) anything from small drippings to a pint with trying to little spread it out. This is to get steam and make it pleasant relaxing 'löyly' as we call it. The stove is usually heated about an hour or so before starting bathing to get temperature somewhere 70°-100°C (158-212°F). It's not advisable to have stove showing those red hot glowing elements peeking out behind stones, but it does happen if stones were not laid properly. But even if water gets directly to elements those will not break or get any damage as they are made intentionally to resist that. So boiling water practically immediately does happen, it's not particularly dangerous when applied in circumstances where equipment is made to withstand that is nothing miraculous. And that really happens millions of times each day in Finland and some other places where that kind of sauna culture is practised both at people private homes and also public swimming baths saunas alike. I will be observing it next time about in 14 hours from this writing as I'm going swimming as usual tomorrow morning at 6:00 am. when pool opens early tomorrow, and then likewise twice more (Wed, Fri). Also once more (Thu) evening sauna reservation slot i've got this flat I live. There is a quite good english page about Finish sauna in Wikipedia, but to get a glimpse what modern sauna and stoves look Harvia a long time stove manufacturer web pages you get some sense what I'm writing about. - https://www.harvia.com/en/ https://www.harvia.com/en/
- skylurk 11mo agoYou might need a pressure vessel and a stirrer to hit 100 deg C in 5 seconds.
- ahartmetz 11mo agoThere is something like that in the original video - running a 120 V kettle at 240 V makes it boil four times as fast. But only a few times.
- quickthrowman 11mo agoYou could run (10) of these 9kW 480V three-phase immersion heaters [0] in place of your 85 HP motor, assuming ~110A FLA @ 480V = 91.5kW. The 9kW immersion heaters are 10.8A each at 480V three-phase (would be 75A if it was 120V single-phase!) Just make sure you have somewhere for the steam to go, it takes up a bit more room than water ;) Is your three-phase a corner-grounded delta service? I’ve never seen one in the wild but I hear they’re used for three-phase ag service drops that are strictly used to run motors. A and C are tapped normally on the secondary but the B phase is bonded to ground and also a line conductor, conductor color is white for B phase instead of orange. [0] https://iseinc.com/_shop/480v-3ph-9kw-immersion-heater-47-14-immersion.html?srsltid=AfmBOor9zyAxEYrt2D6SpSiZXNwealHDicFrtZIeGQjvBIQhrRm7CRJs https://iseinc.com/_shop/480v-3ph-9kw-immersion-heater-47-14...
- gcanyon 11mo agoI would love to see that.
- JojoFatsani 11mo agoYou can run an induction range top off a nema 14-50 and be boiling in like a minute
- andrybak 11mo agoA 2022 Technology Connections video explores various ways to boil water: https://www.youtube.com/watch?v=_yMMTVVJI4c 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 https://www.youtube.com/watch?v=jMmUoZh3Hq4
- throw0101c 11mo agoHe 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-portable-commercial-induction-cooktop-3500w-countertop-burner-hot-plate-p_010340512175 https://www.vevor.ca/induction-cooktop-c_10592/vevor-portabl... * https://www.trueinduction.com/Commercial-Single-Induction-Cooktop.aspx https://www.trueinduction.com/Commercial-Single-Induction-Co... Just need a NEMA 6 plug (GFCI/AFCI per code as well probably): * https://en.wikipedia.org/wiki/NEMA_connector#Nomenclature https://en.wikipedia.org/wiki/NEMA_connector#Nomenclature
- maccard 11mo agoIn 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-single-zone-induction-hob/jb376?vatToggle=incvat https://www.nisbets.co.uk/nisbets-essentials-single-zone-ind... [1] https://www.impulselabs.com/ https://www.impulselabs.com/
- jchw 11mo agoThis 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.)
- Nextgrid 11mo agoIt 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.
- deleted 11mo ago[deleted]
- lxgr 11mo agoGreat 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.)
- throwaway198846 11mo ago> the boil-dry protection circuit continuously engages and disengages until somebody notices or the thing self-destroys – ours did the latter. It is always fascinating to see unforeseen failure modes created by automation.
- CarVac 11mo agoI have a kettle with 5°-settable temperature targets that has transformed my tea drinking. It also has a function to hold temperature for up to 30 minutes, and because it has actual logic going on inside, when you lift it off the base it knows this and won't turn back on when you put it back.
- spike021 11mo agoI have an electric water boiler like that also. I have to be very mindful to press a button to turn it off if i return it empty to the induction plate/holder otherwise it starts clicking and beeping and freaking out.
- JonChesterfield 11mo agoI'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.
- poizan42 11mo agoBut 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.
- throwaway198846 11mo agoYou 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.
- jnsaff2 11mo agoUK power grid has the Eastenders effect. Where the ending credits of the Eastenders soap signals a large increase in power draw from the grid as people will put on the tea kettle at the end of the show. The grid operators have to dispatch enough power to cover for this. While the amount of energy used to boil water at 2kW is not significantly different from 3kW (2kW has a tiny amount of more atmospheric losses I think), there is a difference for the impact on the grid. Same energy but more power generating and transmission line capacity needed.
- holdit 11mo agoHere's a video showing an engineer at the national grid bringing hydro-electric plants online at the closing credits of a popular soap opera in anticipation of the millions of kettle that are about to be switched on! https://www.youtube.com/watch?v=slDAvewWfrA https://www.youtube.com/watch?v=slDAvewWfrA
- deleted 11mo ago[deleted]
- freefaler 11mo agoHow to overclock your kettle :)