Where should a smoke ejector be positioned when used on a window?

Positioning a smoke ejector at the top of the window is effective because it takes advantage of the natural tendency of smoke and heat to rise. Smoke from a fire is hotter and less dense than the surrounding air, causing it to accumulate near the ceiling or the upper parts of a structure. By placing the smoke ejector at the top, it can more efficiently extract smoke and gases, helping to clear the area more rapidly and improve visibility for firefighting operations.

Additionally, this positioning helps ensure that the smoke ejector captures the maximum volume of smoke, which is critical for protecting the health of first responders and improving conditions within the structure. The other positions, such as the bottom or center of the window, would be less effective for smoke removal since they would not capitalize on the natural behavior of smoke rising. Positioning outside on a ledge could also be less effective compared to the top of the window because it may not provide the right angle or suction needed to effectively draw the smoke out of the room.