Re:Barilla Passive Cooker
by maxerickson on Sunday November 06, 2022 @07:00PM
(#33499128)
Not the waste heat from the power plant.
Re:Barilla Passive Cooker
by puffoflogic on Sunday November 06, 2022 @07:45PM
(#33499562)
I'm pretty sure that electric kettles work the same way as electric vehicles: the global warming fairies look you up in a virtuosity table and if you've tithed to Ukraine, there are no emissions from your electricity usage.
As with everything in this discussion, this also depends on where you live as district heating is a thing
Well the heating with gas is cheaper than with electrics in most places.
So it is "heat your house by X at price of the gas heating" vs "heat your house by X at price of electric heating". And the price of old school resistive heating, not the more efficient heat pump.
An electric kettle is ~90% efficient, the rest is lost to the surroundings but the electricity generation (assuming gas) is ~60% so the entire process, gas to hot water is ~60% and most of the waste you don't get the benefit of.
And gas stove kettle is ~40% efficient but you get the other 60% back as heat in the surroundings, so the entire process is ~100% efficient.
Assuming you need that waste heat of course. In the summer that 60% inefficiency really is an inefficiency.
The efficiency loss of the electric kettle also gets converted into heat that heats up your home, energy doesn't just disappear.