Electric fans do not cool rooms but actually add heat to them because the motor that spins the blades generates friction, which produces real heat that is dumped into the room; while fans blow away the thermal boundary layer around your skin, the mechanical energy from the motor converts to heat, making the room warmer overall.
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You've been using your fan wrong your whole life #surprising #physics本站添加:
Your fan is secretly heating your room.
It just acts as an exhaust, blowing away the invisible bubble of heat around your skin. But the motor spinning the blades generates friction, dumping real heat straight into your bedroom.
Drop a comment if you didn't know.
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