100% Efficiency?

Gold Member
Hello;

Is there a 100% efficient component? One where there is no waste energy? Or something that is completely renewable such that all the energy wasted is put back into the component?

No such thing as a 100% efficienct component.

And remember
100% Utilisation =/= 100% Efficiency.

You can convert electrical or mechanical energy to heat with 100% efficiency.

russ_watters
Mentor
Yes, DanielR implies, an electric space heater is 100% efficient.

Hmm, very true I didn't think of that, being a mechanical engineer I immediately think of moving parts and heat usually = baaad.

Electric space heaters are a horrible way of providing heating though, as a system. But that wan't what the OP asked : /

Transformers can have efficiencies of over 99%

Q_Goest
Homework Helper
Gold Member
Isn't superconducting wire 100% efficient at transfering electric power?

Yes, superconductors are 100% efficient at transferring power/storing electrical energy
but the op wants a component he probably doesnt mean a superconductor...:D

sophiecentaur
Gold Member
Actually, although an electrical water heater could be thought of as being 100% efficient, the whole 'system' won't be.You will either have to be heating up the kettle (or what ever), which is a waste or you will be losing finite amounts of heat to the surroundings.

A superconductor may be lossless but producing superconductivity involves the input of energy into the refrigeration system - so even that, when viewing the system as a whole, does not provide you with 100% efficiency.

The only way to eliminate loss is to do nothing!

Transformers can have efficiencies of over 99%

Yes somewhere i studied that transformers have the highest efficiency known to date.

Actually, although an electrical water heater could be thought of as being 100% efficient, the whole 'system' won't be.You will either have to be heating up the kettle (or what ever), which is a waste or you will be losing finite amounts of heat to the surroundings.

A superconductor may be lossless but producing superconductivity involves the input of energy into the refrigeration system - so even that, when viewing the system as a whole, does not provide you with 100% efficiency.

The only way to eliminate loss is to do nothing!

Thats the line I was thinking along, it's why I said 100% utilisation and 100% efficiency are different things.

sophiecentaur