Anonymous asked in Home & GardenMaintenance & Repairs · 4 weeks ago

Why is this room cooler when the ceiling fan is blowing upwards and warmer when it's blowing down?

8 Answers

  • 4 weeks ago

    It's got to do with the shape of the wing. When the wing faces a certain way it pushes the air down and vice versa. The same principle as airplanes vs racing cars. Also, please explain how its blowing upwards??? Did you place it on the floor or...??? 

  • 4 weeks ago

    Heat travels up and when the fan is blowing down the heat at the ceiling is blown downward.

  • 4 weeks ago

    When a ceiling fan rotates counterclockwise (while looking up at it), the slant of the blades pushes air down, causing a noticeable breeze. The faster the fan spins, the cooler you feel. This cooling effect doesn't change the temperature of the air, it only makes you feel cooler.

  • Edwena
    Lv 7
    4 weeks ago

    Heat rises, so in a room with no air movement the air is warmer at the ceiling and cooler at the floor. A ceiling fan stirs the air which lower the room temperature and moves air cross your body to cause evaporation.  Which cools your body.  

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  • 4 weeks ago

    Did you determine that is was cooler by measure or by just how it felt. In terms of temperature it should not make any difference since it is just mixing the air in the room and not cooling or heating it. As others have said, it is the movement of air over your body that can make it feel cooler. Of course if the room is really warm then it will not feel cooler not matter the direction of the fan.

  • Da
    Lv 5
    4 weeks ago

    Blowing upwards, it should be warmer, unless the fan is oversized for the room. Usually downward air feels cooler because it speeds the evaporation of sweat on your skin.

    But if the room is small and the fan is large, it will pull cool air upwards and cool the hot air and circulate that back down the walls.

    If this is the case, it really doesn't matter which direction the fan is operating. Most likely, the wind is directed at you when the fan is blowing upwards. This is why it feels cooler to you. But in reality it would be the same ambient temperature or hotter.

  • 4 weeks ago

    Heat rises. That is a complete answer.

    Update to comment: Your 1st 2 sentences DIRECTLY CONTRADICT each other.

  • Anonymous
    4 weeks ago

    Heat rises.  The the fan is blowing downwards it is pushing hot air down, but in the reverse direction it is drawing the cooler air near the floor upwards increasing the thermic comfort for the people in the room.  You can find diagrams illustrating this all over the net.  If you need to know this for a class it's best to study a picture so you understand.

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