Why are Air-Conditioning units (ACs) always installed on the upper side of a room?
Correct answer: C. To set up convection currents to cool the room since the cool air is denser and settles down
- A. To prevent someone from bumping into them and hurting themselves
- B. So that the cool wind directly hits the person's face, causing them instant relief
- C. To set up convection currents to cool the room since the cool air is denser and settles down
- D. It's just a standard, you can place the units anywhere you like
Explanation
Warmer air at the bottom is displaced and due to it being less dense, it rises. This process continues and sets up a convection current that will allow thermal transfer to occur. Since cold air is emitted from the AC unit blowers, the unit has to be placed at the top of a room to allow a convection current to form.
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