Gas kettle

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Gas kettle

This topic has 23 replies, 14 voices, and was last updated 6 September 2022 at 22:47 by Robin Graham.

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4 September 2022 at 15:49 #612332
duncan webster 1
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@duncanwebster1
Up at the ME club we have two kettles for making tea (we drink a lot). One of them has fins on the underneath and boils much more quickly than the other. Anyone know where I can get one from, I've tried the usual suspects Argos etc. All an attempt to reduce our energy bill at home.
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4 September 2022 at 15:49 #36963
duncan webster 1
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@duncanwebster1
4 September 2022 at 16:56 #612345
not done it yet
Participant
@notdoneityet
They are out there. Here is one example, but not very efficient on the pocket for purchase!!

PRICEY!

Cheaper but secondhand

Another

Wide and shallow with a small flame, and fire-proof insulation above, might be the best attributes you could look for?

Edited By not done it yet on 04/09/2022 17:14:17
4 September 2022 at 17:12 #612347
Nick Hughes
Participant
@nickhughes97026
This might be it :-

TurboPot FreshAir Kettle
4 September 2022 at 18:25 #612358
old mart
Participant
@oldmart
In the winter, the heat that passes the kettle is not wasted, but helps to keep the room warm. I would think that a plastic bodied electric kettle would be most energy efficient, though.
4 September 2022 at 19:14 #612366
peak4
Participant
@peak4
Duncan, not sure where you are in Cheshire, but if you search for Copper Kettle on ebay at the moment, there's a couple for collection only in Manchester somewhere; 7 days to run.

Lots more is you vary the search term a bit.

Bill
4 September 2022 at 19:38 #612370
Mark Rand
Participant
@markrand96270
Got some copper strip, silver solder and a torch?
4 September 2022 at 19:55 #612373
Samsaranda
Participant
@samsaranda
Currently a KWh of gas energy is a third the cost of a KWh of electric energy, so from now on a gas kettle gets my vote. Dave W
4 September 2022 at 20:22 #612375
not done it yet
Participant
@notdoneityet
Posted by Samsaranda on 04/09/2022 19:55:31:

Currently a KWh of gas energy is a third the cost of a KWh of electric energy, so from now on a gas kettle gets my vote. Dave W

Dave,

Leccy only three times that of gas? Mine is currently 32.3p versus7.28p. That is almost 4 1/2 times for me. We are on E7, so I suspect the capped unit rate may be cheaper for me when the winter months arrive. I will await the revised unit costings before deciding to change my tariff.

The scoundrels are already trying to increase my monthly debit by a factor of about 2 1/2 – even though I am currently in credit to the tune of a couple hundred quid. That will not wash, for sure.

I think my average unit cost is between 22p and 25p at the moment – depending on the split bewtween day and night units used.
4 September 2022 at 22:21 #612382
duncan webster 1
Participant
@duncanwebster1
I'm not paying £300 for a kettle, and domestic authority wouldn't accept second hand. All the more reasonably priced ones have aluminium in their construction, so not keen on that.

Thanks for the replies anyway. Normal gas kettles are only about 30% efficient, electric much higher, so in summer when you don't want the waste heat in the room it's not much different cost wise, and electric switch themselves off, so probably cheaper in our chaotic house. Come winter I might think again and get a normal inefficient gas one. As for making one, we'll I've got a vertical boiler I could stand on the stove, but can you imagine SWMBO coping with that?
5 September 2022 at 06:00 #612391
pgk pgk
Participant
@pgkpgk17461
The concept of the 'kelly kettle' might work without the base unit but I couldn't see just the kettle part being sold as a spare. A more extensive search might find similar rival offerings.

pgk
5 September 2022 at 06:46 #612392
Michael Gilligan
Participant
@michaelgilligan61133
Duncan

I think you might improve your search results if you include the word stove

… it only took me a few moments to find this: **LINK**

https://picclick.co.uk/Vintage-LW-quick-boil-copper-kettle-gas-253612449096.html

… which, I suspect, may be the type that your club uses.

MichaelG.

.

Edit: __ useful historical notes here:

https://oldcopper.org/makers/e_v_wilkes.php

Edited By Michael Gilligan on 05/09/2022 06:57:01
5 September 2022 at 07:07 #612396
not done it yet
Participant
@notdoneityet
5 September 2022 at 09:35 #612410
Martin Kyte
Participant
@martinkyte99762
Perhaps it's about time someone invented low temperature tea. What about steeping the leaves in ethonol to release the volatiles and then adding water at 70°C that should get you somewhere round a 40% reduction in heating costs.

regards Martin
5 September 2022 at 09:53 #612413
Vic
Participant
@vic
I bought a camping kettle with fins at the bottom, it’s supposed to use up to 30% less gas. Lots on Amazon with capacities from 1L to 1.6L, there may be larger ones?
5 September 2022 at 10:38 #612419
duncan webster 1
Participant
@duncanwebster1
Thanks again, but most of these links are to either second hand, which won't get domestic approval, or aluminium, which won't get mine (remember the aluminium in the water supply incident many years ago)
5 September 2022 at 10:48 #612422
Michael Gilligan
Participant
@michaelgilligan61133
Well you’ve already baulked at price, Duncan … so I suggest you just go to Tesco and buy a nice functional black plastic Electric Jug Kettle for £13 like we did.

MichaelG.
5 September 2022 at 11:06 #612425
Joseph Noci 1
Participant
@josephnoci1
We use a Kellie type kettle ( not kellie, but locally made so not a known name ) – I see there is a Ghillie kettle, made in the UK – it is really efficient! The UK one is Al, while the Kellie seems available in SS as well.

You have to make the fire, so carbon emissions, etc, but I use small twigs, leaves, etc, that are really dry, lying around on the ground in the bush etc.

3 large cups of water boils in 7 minutes from when the match is struck, with a large handful of twigs.. Smoke emits for the first minute or less, and if the fuel is really dry, smoke for 10-15sec only.

Not great in the clubhouse tea room…but it really works well!
5 September 2022 at 16:21 #612472
not done it yet
Participant
@notdoneityet
To boil 290cm3^ (a small mug, filled to the brim), my smart meter virtually always records 0.07kWh. A 1kW electric kettle takes a few seconds less than 2 minutes to boil the same volume.

You can work out the cost for each. Natural gas is much the cheaper energy source.
5 September 2022 at 18:29 #612492
duncan webster 1
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@duncanwebster1
I hate this forum. I've just composed a reply to NDIY, during writing the forum logged me out, so when I posted it lost the reply. Grrrrr
5 September 2022 at 18:46 #612499
duncan webster 1
Participant
@duncanwebster1
Start again, this time in a text editor to keep it out of the evil clutches of the forum software.
NDIY's info is very useful. Assuming the electric kettle takes 110 seconds it uses 0.03 kWhr. To raise 290 cc of water from 20C to boiling takes 0.027 kWhr, so the elec kettle is ~90% efficient, about what you'd expect, you have to heat the kettle itself and it will lose a little to the outside world whilst it heats up. The gas kettle is 39% efficient, higher than I expected. As gas is so much cheaper than elec, I'd save 0.4p on every cup. I can get a stainless kettle for £14, so 3500 cups of tea. In our house that won't take too long, certainly less than 5 years. In winter the 'waste' heat won't be wasted anyway, it will heat the room. Look out Argos, I'm on my way. Just a pity I can't find the more efficient one at a sensible price.

Knowing my luck the latest PM will cut the link twixt gas and elec prices, after all nuclear and renewables shouldn't have gone up at all, so my financial wizardry will come crashing down.

Edited By duncan webster on 05/09/2022 18:48:57
6 September 2022 at 16:40 #612585
Bazyle
Participant
@bazyle
Is there a model engineer in the house? 6in dia firetube boiler only 2 in long, maybe 30 3/8in tubes. Silver soldered of course but no need to bother the club inspector, as a big fill/-emptu spout needed anyway. Like a kellie on steroids.

Whatever you choose remember to have a thermos ready for any excess.
6 September 2022 at 19:45 #612609
not done it yet
Participant
@notdoneityet
Posted by Bazyle on 06/09/2022 16:40:43:
…

Whatever you choose remember to have a thermos ready for any excess.

At home, one can pour in only the required amount of water. I do.
6 September 2022 at 22:47 #612630
Robin Graham
Participant
@robingraham42208
Posted by duncan webster on 05/09/2022 18:46:34:

Start again, this time in a text editor to keep it out of the evil clutches of the forum software.
NDIY's info is very useful. Assuming the electric kettle takes 110 seconds it uses 0.03 kWhr. To raise 290 cc of water from 20C to boiling takes 0.027 kWhr, so the elec kettle is ~90% efficient, about what you'd expect, you have to heat the kettle itself and it will lose a little to the outside world whilst it heats up. The gas kettle is 39% efficient, higher than I expected. As gas is so much cheaper than elec, I'd save 0.4p on every cup. I can get a stainless kettle for £14, so 3500 cups of tea. In our house that won't take too long, certainly less than 5 years. In winter the 'waste' heat won't be wasted anyway, it will heat the room. Look out Argos, I'm on my way. Just a pity I can't find the more efficient one at a sensible price.

Knowing my luck the latest PM will cut the link twixt gas and elec prices, after all nuclear and renewables shouldn't have gone up at all, so my financial wizardry will come crashing down.

Edited By duncan webster on 05/09/2022 18:48:57

This corresponds with my own observations/calculations. I was actually trying to prove my wife wrong when she insisted on buying a hob (gas) kettle to replace the electric one when it conked out. Gas turned out (measurement) to take ~0.24kWh to boil a litre of water, electric kettle (calculated assuming 90% efficiency) ~0.11 kWh. That gives an efficiency of ~42% for gas. So with gas about a quarter of the price of electricity, gas wins hands down.

Robin.
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