Cool Room Air With Fan By The Window

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Homework Help Overview

The discussion revolves around the effect of positioning a fan to blow air out of a window and its impact on cooling a room. Participants are exploring the underlying physics of airflow and temperature differences between indoor and outdoor environments.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants are questioning how air enters the room when a fan is blowing air out. There are considerations about temperature differences and the role of air movement in cooling effects.

Discussion Status

The discussion is ongoing, with participants sharing personal observations and questioning the mechanics of airflow and temperature regulation. Some have suggested that the cooling effect may be related to increased evaporation rates due to moving air.

Contextual Notes

There are uncertainties regarding the temperature conditions inside and outside the room, as well as assumptions about air pressure and airflow dynamics that are being examined.

NotMrX
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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?
 
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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?
 
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?
 
NotMrX said:
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?
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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