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Nov 29 2015 09:35pm
refrigerant boils at a low temperature and cools the evaporator coil and then a fan blows across it to cool the room

but what is happening on an atomic scale? if "lack of movement" is all cold is, how does cold air blow in my face?
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Nov 29 2015 10:41pm
Quote (dude_927 @ Nov 29 2015 11:35pm)
refrigerant boils at a low temperature and cools the evaporator coil and then a fan blows across it to cool the room

but what is happening on an atomic scale? if "lack of movement" is all cold is, how does cold air blow in my face?


uhhh
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Nov 29 2015 11:05pm
Quote (dude_927 @ 30 Nov 2015 04:35)
refrigerant boils at a low temperature and cools the evaporator coil and then a fan blows across it to cool the room

but what is happening on an atomic scale? if "lack of movement" is all cold is, how does cold air blow in my face?


here's a very new video explaining it

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Dec 2 2015 11:37pm
Simply put, the movement of the molecules, or the heat, transfer from your face into the air surrounding you, since the air blowing in your face has less heat in it (lower temperature).

The heat equation and Fick's second law explain the pattern, where heat flows from an area of high concentration to an area of low concentration.
https://en.wikipedia.org/wiki/Heat_equation
https://en.wikipedia.org/wiki/Fick%27s_laws_of_diffusion#Fick.27s_second_law
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Dec 2 2015 11:41pm
Because heat is motion of particles, heat flows from hot to cold through collisions on the microscopic scale.
Heat flows from you to the cooled air in the same way that it flows from the air to an ice cube thus causing it to melt.

The reason for this is that the particles from the more heated material collide with the ones in the less heated material, thus transferring energy to them and causing them to move faster.
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Dec 9 2015 04:14am
It sucks the energy from the air around you. But who needs energy when you can feel comfortable.
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Dec 9 2015 04:59am
It doesn't, or if you can prove that it does - I'm going with magic.
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Feb 16 2016 03:29am
Quote (Saucisson6000 @ Nov 29 2015 10:05pm)
here's a very new video explaining it

http://www.youtube.com/watch?v=se1XZ8D_fCM


this was the greatest video I ever watched
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Feb 16 2016 12:52pm
Heat is average kinetic energy. Your face molecules are vibrating in a way that gives them more evegy than the surrounding air, so even though the air is moving it has less energy than your face. So once it contacts your face it absorbs energy and you get colder.
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Feb 16 2016 02:42pm
Like a bike pump connected to a spray can :lol: epic video.
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