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IsMyNameBen t1_irfnm38 wrote

Reply to comment by Loobeensky in Stanley Legendary 1,9 l, water lukewarm after less than 30 hours by Loobeensky

You're still using the energy though, just in one chunk rather than several. Water takes a fixed amount of energy to heat up (per volume), so all you're getting out of this arrangement is rubbish tea.

The only reason boiling it all at once would make sense would be if your energy was considerably cheaper at certain times of day, but even then, you only need 24h.

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Loobeensky OP t1_irfp5td wrote

https://physics.stackexchange.com/questions/678761/energy-used-to-boil-a-full-kettle-once-vs-boiling-enough-water-for-a-cup-multipl

Excuse me, I'm not a barbarian, I did my research before I've decided to buy Stanley's portable murder weapon to save electricity by boiling one big pot of water a day :D

Yeah, that's also something I wanted to do: to boil it all at night when it's cheaper and have it ready for the next day.

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fatherofraptors t1_irun1kh wrote

What's your price per kWh, how much energy does you kettle use and for long does it run before it boils a batch of water? How much did the vacuum bottle cost?

I'm really having a hard time seeing how this can have a reasonable payback period considering how little energy we're talking about saving here.

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