If a machine is never 100% efficient transforming energy into work because part of the energy is converted into heat, does it mean an electric heater is 100% efficient? @showerthoughts@lemmy.world
If a machine is never 100% efficient transforming energy into work because part of the energy is converted into heat, does it mean an electric heater is 100% efficient? @showerthoughts@lemmy.world
Consuming energy to do something the device isn’t intended to do is the definition of inefficiency. You’ve basically redefined efficiency so as to make it meaningless.
What are you confused about?
That’s why they phrased it “also basically 100% efficient space heaters.”
Every electric device is a something% effective whatever work they are meant for device, but ALSO a 100% effective space heater.
That second part is meaningless to the devices normal function, but very relevant to the post question.
They didn’t redefine efficiency. They changed the purpose scoping.