Is the conversion of energy transfer into a fan 100% efficient? if not, what happens to the missing energy?

Question

Is the conversion of energy transfer into a fan 100% efficient? if not, what happens to the missing energy?

Answer 1

If it is an AC fan, then some of that energy woll be lost due to reluctance of the magnetic field through the iron cores. This leads to heat which is lost. Not all the magnetic flux is used so that is another loss.

Friction in the bearings also produces wear, noise, and heat.

The fan blades themselves have a drag factor as they slice through the air - causing noise, and turbulence at the edges reduces efficiency of the fan. Some of the air is sucked backwards off the blade edge onto the next blade because of the negative pressure under the blade. This is another loss of energy just moving air around instead of directing it to do work.

Answer 2

No it is not 100% efficient there is no machine with 100% efficiency. The energy is lost to friction.

Answer 3

no it is turned into heat, a room will actually be cooler without the fan running, but will seem warmer because there will be no moving air to speed sweat evaporation & remove body heat.

Answer 4

There is nothing that is 100%. The fan converts electrical energy into mechanical energy and is probably 40% inefficent. What u are looking far is there is a small amount that is converyed into heat.