7kW immersion heater?

[AdamW]

I was just wondering, seeing as my immersion is wired in 4mm, technically I should be able to draw 30A (provided I upgraded the fuse on the radial!).

Now, does anyone know if it is possible to buy a standard-fit immersion heater of more than 3kW? This would give benefits such as heating a tank of water in 10 minutes flat. I am not sure if the industrial type ones would fit a standard copper cylinder.

This is just theory as I have no intention of doing it, not really worth the outlay, but it would be interesting to see.

 

[securespark]

Not come across any but you could install an electrode water boiler!!

These heat the water by passing a current between electrodes immersed in it......

 

[AdamW]

That's not a bad idea, use the resistance of the water instead of a coil, clever engineering!

 

[Stod]

Slight earth leakage problem unless you supply it via a transformer...

 

[Big_Spark]

Adam, the easy way to achieve it, if your tank has the facility, is to install a second immersion element and stat. This has the added bonus of ensuring hot water if one fails!!

 

[crystal ball]

A factory I used to work at had an electrode boiler for steam generation, about once a month the RCD used to trip and would not re set until salt had been added to the water-that meant a trip to the canteen and free cakes

 

[ban-all-sheds]

That's not a bad idea, use the resistance of the water instead of a coil, clever engineering!

Indeed - failsafe too. I wonder how long the electrodes last..

 

[AdamW]

Adam, the easy way to achieve it, if your tank has the facility, is to install a second immersion element and stat. This has the added bonus of ensuring hot water if one fails!!

Yes, have a semi-redundant immersion heater! Not a bad idea.

Free cakes? Blimey, when we get snowed in at work we don't even get free cups of tea!

 

[ban-all-sheds]

That's not a bad idea, use the resistance of the water instead of a coil, clever engineering!

Here's one for you:

That one's only 25MW - they can do you a 60MW if you prefer. You do have a 10kV supply, don't you?

 

[ban-all-sheds]

I'm sorry - I may have suggested an inappropriate product. The drawing above doesn't really give any indication of scale, but elsewhere on their website they have a photo which does:

hope you're not disappointed..

 

[securespark]

So, enough for a couple of baths and a load in the WM, then, Ban???

 

[ban-all-sheds]

I leave it as an exercise to the reader (i.e. anyone who can be bothered) to work out, assuming 100% efficiency, how many 300l baths could be filled per second with water raised from 10C to 40C in a 60MW boiler...

 

[plugwash]

hehe

what i think would be nice is a fast kettle

how much power would be needed to raise say 1L of water to 100 celcius in say 10 seconds

 

[ban-all-sheds]

hehe

what i think would be nice is a fast kettle

how much power would be needed to raise say 1L of water to 100 celcius in say 10 seconds

That's 'O' level physics.

Unfortunately it's a long time since I did my Physics O level....

But I do know that it'll take more energy to make it boil than just to raise it to 100.

 

[plugwash]

when the water in your kettle starts to boil it means that at least some of the water is as hot as it is going to get as a liquid

energy is then being wasted turning the water into useless steam