Why is air colder when it has passed through a fan?
2006-07-03 08:51:07 · 9 answers · asked by ? 3 in Science & Mathematics ➔ Physics
It is basically just a wind chill factor as stated above. It does draw heat away from your body though. An interesting thing to note is that air is one of the best insulators as well as great for transfering heat as well. Non moving air insulates great, that is why you have the foam insulation, because it doesn't allow air to easily move through it, it stays stagnant. Whereas moving air transfers a great deal of heat energy.
2006-07-03 09:22:04 · answer #1 · answered by ChrisRiedel_1 2 · 0⤊ 0⤋
The action of the fan causes the air to do one or both of (a) loose moisture and effectively heat and/ or (b) exchange its heat with colder air from incoming air resulting from that displaced by the blowing action of the fan.
2006-07-03 15:59:17 · answer #2 · answered by Akowekowura 1 · 0⤊ 0⤋
Hi. Actually, air is warmer after it passes through a fan due to friction (with the blades, other air molecules, the grill, etc.) and the heat of the motor, but moving air carries heat away faster so it FEELS cooler to your skin. Not to a thermometer.
2006-07-03 23:06:58 · answer #3 · answered by Cirric 7 · 0⤊ 0⤋
its not. The motion of air molecules against your skin pulls away radiated heat making you feel colder. Add sweat to the mix and the effect is increased greatly.
2006-07-13 09:16:28 · answer #4 · answered by tantamount_to_anarchy 2 · 0⤊ 0⤋
For a fan control known as "power thrust" or "super thrust" that sends cooled air farther in to the room.
2006-07-13 09:08:27 · answer #5 · answered by siraj r 1 · 0⤊ 0⤋
i should think that the air could be relatively slightly cooler because the heat energy contained within the air particles is turned into some sort of kinetic energy. anybdy agree?
2006-07-03 17:13:42 · answer #6 · answered by kalkmat 3 · 0⤊ 0⤋
it is not, but it blows away the air warmed up by your body, which makes you feel colder
2006-07-03 15:55:09 · answer #7 · answered by Anonymous · 0⤊ 0⤋
It isn't cooler, but it is accelerated which means it causes water to evaporate faster when the air hits you. Evaporation causes cooling.
2006-07-03 15:54:37 · answer #8 · answered by Nelson_DeVon 7 · 0⤊ 0⤋
Its not, it just seems that way to your skin. You can prove this with a thermometer.
2006-07-03 15:54:20 · answer #9 · answered by parshooter 5 · 0⤊ 0⤋