this post was submitted on 13 Nov 2023
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As long as you've got some form of heating running, every electrical device in the room is ~100% efficient.
Also, because this is absolutely hilarious: They make heated LED lights for use in really cold places.
The point was we want the heat from them not being 100 percent efficient...now consider why you'd bother with a LED with a heat circuit when incandescent exists.
I don't think you understand their point. Typically, heat is the only undesirable byproduct of electrical devices, so the less heat it produces, the more "efficient" it is. However, if what you want is heat, then all devices are 100% "efficient." (Minus any EM or kinetic energy that leaves the area as anything but heat)
A 100W incandescent light bulb and a 10W LED+90W heater are exactly the same in terms of how much heat they produce for how much energy they use, with the bonus that when you don't want that heat, you can turn off the 90W heater and have the same light for 10% of the energy expenditure
You're right, but that wasn't his point, he's talking about all the electrical devices being 100 percent efficient and heating as separate.
Wasted energy isn't just heat, it also includes chemical energy (chemical bonds), kinetic energy (noise and vibration), activation energy (chemical reactions), and light.
So a lamp that heats up the room but also makes noise is not using its energy 100% efficiently. Because the noise is not wanted.