I know this is an incomplete answer, but that depends on a variety of factors: is the room in a large building or small one? Is it being heated or not? Is it in the sunshine or at night? What's its orientation? Are you in a humid or dry climate? There are a lot of factors that contribute to the heating and cooling capacity of a room.
Having said that, I would imagine that in most cases blowing cool air into your room will cool it more quickly. Blowing the warm air out is effective for moving air through the room via negative pressure, but any cooling derived from this method presupposes that the air entering into the room is cooler than the room itself (not likely the case in most situations). However, if the room is on the west side of a building in the afternoon, blowing air outside may cool it more than blowing air in due to orientation and solar gains.
Blowing cold air in is better for effective temperature control in a room.
Setting your window fan to blow air out of the room is generally more effective for ventilation. This creates a negative pressure inside the room, drawing fresh air in from other sources.
Blowing hot air out is better for effective temperature control in a room.
Having a fan blow out of a window is more effective for optimal air circulation in a room.
A window fan should blow air out of the room to help circulate fresh air and remove stale air.
Blowing air out the window is generally better for ventilation because it helps to remove stale air and pollutants from inside the room, allowing fresh air to come in.
For optimal ventilation, a window fan should blow air out of the room.
It tastes better in a cold temperature.
Basically, in order to be able to see more clearly through it. Also, I noticed that if I dont blow the plastic-tight, then the wind has a tendancy to rattle and move the plastic sheeting back and forth so much that it will loosen and come unstuck from the window frame.
A warm room. A cold room will weaken ur immune system (not good).
Because the surface temperature of the window is below the dewpoint temperature of the air in the room, so the water vapor in the room air condenses on the cold window. If you can, lower the room humidity or raise the room temp to warm the window to stop it.
whichever direction the window is facing