If so that means moving a block of ice has negative heat efficiency. Sounds like nitpicking to me.
ptz@dubvee.org 11 months ago
Technically, yes. Even the internal resistances outside of the heating elements eventually radiate into the space. Since the purpose is space heating, it’s not a waste product.
The reason heat pumps are more efficient (i.e. around 300% or more) is not that they create more heat from the same amount of energy but because they concentrate and move heat from one source to another.
trolololol@lemmy.world 11 months ago
Chainweasel@lemmy.world 11 months ago
[deleted]ptz@dubvee.org 11 months ago
I’m not clear if the visible portion eventually turns to heat or not, but the bulk of those emissions are in the infrared spectrum which you will feel as heat.
LastYearsPumpkin@feddit.ch 11 months ago
This is correct, but it’s also, it’s only 100% of the heat at that point in the circuit.
Technically, using natural gas to make electricity, then sending that electricity to an electric heater would be less efficient than burning that natural gas for heat at the source.
So it depends on where you start counting from.
ptz@dubvee.org 11 months ago
True, and also the transmission losses between the power plant and your outlets are also factors. I just treated the question like a high school physics one where you’re allowed to disregard air resistance. lol