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Homework Help: Fan by the Window

  1. Sep 11, 2006 #1
    Suppose a fan was positioned to blow air out of a window so that window fit well around the fan. Why would this cool off a room?
     
  2. jcsd
  3. Sep 11, 2006 #2

    HallsofIvy

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    How is air coming into the room?

    What if the temperature in the room were 70 degrees F and the temperature outdoors 100?
     
  4. Sep 11, 2006 #3
    I don't know. I just know that when I put a fan in that way the room cools off. It is an efficiency so maybe air isn't coming and the pressure is lowering?
     
  5. Sep 11, 2006 #4

    Hootenanny

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    I would imagine the cooling effect you are experiencing simply comes from the fact that the air is moving, preventing build up a humid air thus allowing your sweat to evaporate at an increased rate.
     
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