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sauravshakya Group Title

If fan is switched on it increases or decreases the temperature of the room?

  • one year ago
  • one year ago

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  1. DLS Group Title
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    increases-*

    • one year ago
  2. sauravshakya Group Title
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    Then how do we feel cool

    • one year ago
  3. chrismaloney Group Title
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    The fan will increase the total temperature of the room. Due to the mechanical motor with the fan, we illusion of being cool is to do with wind chill.

    • one year ago
  4. DLS Group Title
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    you know sweating helps to remove heat fromthebody? how does that happen?

    • one year ago
  5. sauravshakya Group Title
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    yes... I guess evaporation

    • one year ago
  6. DLS Group Title
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    correct

    • one year ago
  7. DLS Group Title
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    Sweating helps to remove body heat by evaporation because heat is extracted from body when liquid water changes phase to water vapour. The fan creates an air flow and accelerates the process of heat removal from body to surrounding air as well as sweating. Thus more heat is removed from body and feeling cooler.

    • one year ago
  8. sauravshakya Group Title
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    oh.... So, if we want to increase the temperatur of the room can we switch ON our fan

    • one year ago
  9. DLS Group Title
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    no

    • one year ago
  10. sauravshakya Group Title
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    why?

    • one year ago
  11. DLS Group Title
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    it shouln't happen in an "empty" room

    • one year ago
  12. sauravshakya Group Title
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    But it will increase the K.E of the air molecules. right?

    • one year ago
  13. DLS Group Title
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    A fan "merely" circulates the air in closed space (example: empty room). The hot air in the room and also the very little air heated up by the action of the fan move upwards due to the centrifugation provided by the fan.

    • one year ago
  14. DLS Group Title
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    Hot air is lighter (less heavy) than cool air and always tends to move up. this tendency is assisted by the centrifugation provided by the ceiling fan.

    • one year ago
  15. sauravshakya Group Title
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    So, why the temperature of the room will not increas

    • one year ago
  16. DLS Group Title
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    |dw:1357123616997:dw|

    • one year ago
  17. sauravshakya Group Title
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    Thanx

    • one year ago
  18. DLS Group Title
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    Compare: The heat of a candle, one candle in a large room will not significantly increase the heat of the room, unless it is one big candle about the size of a fireplace. Yes, the candle is adding thermal energy to the room, but if the room is large enough and the candle is not very big, it would take many candles to heat the entire room.

    • one year ago
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