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A comment on Why does the USA use 110V and UK use 230-240V?. Parent comment

Re:Why does the USA use 110V and UK use 230-240V? by psd1 on Tuesday August 29, 2023 @02:33PM (#37311960)
The hot urn cannot be more efficient than boiling the correct amount of water each time.

The limiting factor is the specific heat capacity of water. If daily consumption is 2l, you have to put in the joules to raise 2l to boiling, either way. If you have heat losses during the day, there's your inefficiency.

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Re:Why does the USA use 110V and UK use 230-240V? by jedberg on Tuesday August 29, 2023 @02:44PM (#37312091)
It is of course less efficient. I never said it was more efficient. But it's more convenient.
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Re:Why does the USA use 110V and UK use 230-240V? by bialpio on Tuesday August 29, 2023 @03:36PM (#37312794)
Your comment literally says "It's super efficient" though.
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Re:Why does the USA use 110V and UK use 230-240V? by jedberg on Tuesday August 29, 2023 @04:01PM (#37313111)
Sure, but that doesn't imply it's more efficient than the other options. Just that it's also very efficient.
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Re:Why does the USA use 110V and UK use 230-240V? by HDThoreaun on Tuesday August 29, 2023 @03:32PM (#37312731)
How many people are boiling the correct amount each time though? I fill my jug up all the way and then keep reboiling which seems less efficient as the boiled water keeps cooling down.
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Re:Why does the USA use 110V and UK use 230-240V? by hot_gril on Tuesday August 29, 2023 @04:07PM (#37313202)
I fill it to a certain mark every time. Not that I'm trying to conserve energy, I just don't want to leave extra water sitting.
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Re:Why does the USA use 110V and UK use 230-240V? by zbrozek on Tuesday August 29, 2023 @04:54PM (#37313942)
I use my target cup to measure out how much water to boil.
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Re:Why does the USA use 110V and UK use 230-240V? by shrx on Tuesday August 29, 2023 @05:07PM (#37314116)
Why wouldn't you boil just the amount that's needed? Boiling the whole container is unnecessarily wasteful.
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Re:Why does the USA use 110V and UK use 230-240V? by HDThoreaun on Tuesday August 29, 2023 @07:10PM (#37315407)
Boiling water costs like a tenth of a cent and saves a few seconds to just fill less often
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