-
The big ring on an induction hob is likely around 3 kW, same as an electric kettle, and pesky laws of physics mean they boil in exactly the same time. What I think you've done is discover the magic of boiling much less water.
Those instant tap things use the equivalent of 11 W continuous on standby last time I looked into it, which is about the same as boiling 3 litres of water per day.
grams-
What I think you've done is discover the magic of boiling much less water.
What I think I've done is increase the surface area being heated and made the water shallower.
I have one of these https://uk.alessi.com/collections/kettles/products/tea-rex-kettle and it does boil quicker than one of these which I also have https://www.dualit.com/products/lite-jug-kettles
I was fascinated enough to do a race... the Alessi on the hob won by a significant amount. But yes I realise that the power draw is equal (silly smart house + Home Assistant + Grafana all said so), but still the Alessi boils sooner.
This will likely now send me down a wikipedia thermodynamics rabbit hole as I seek to understand the physics of it, but a quick hunch feels like it would be true that if one is increasing the contact area of the heated surface on the liquid and reducing the depth of the liquid, then it kinda makes sense it's accelerating the heating even for the same energy being applied (even if that energy is itself spread over a larger surface and less intense than the smaller surface). idk... will Google.
Velocio
Go induction on a hob and just use a stove top kettle with a wide base.
Ridiculously quick, 30s to boiling is barely time to get a cup and choose the tea you want to make.
And these are electrically efficient too.
Changing a hob to make a lot of tea seems crazy, but if you're redoing a kitchen and looking at things like taps that deliver 90-95c hot water then you may already be considering a hob change, so this is just two birds with one stone.