Explain why it is desirable to install an air... | WAEC SSCE - Physics - 2012

Question 1 Report

Explain why it is desirable to install an air conditioner near the ceiling of a room and not close to the floor.

Answer

Why an air conditioner is installed near the ceiling

An air conditioner cools the air passing through it. Cold air is denser (heavier) than warm air, so it tends to fall, while warm air is less dense and rises.

When the air conditioner is placed near the ceiling, the cold air it produces sinks downwards through the room, pushing the warmer air upwards towards the unit, where it is cooled in turn. This sets up a continuous convection current that circulates the air and cools the whole room evenly and quickly.

If it were fixed near the floor, the cold air produced would simply remain at floor level (having nowhere to fall to), the warm air would stay trapped near the ceiling, and there would be no effective circulation, so the room would be cooled poorly.

Read lesson note on Fluid At Rest (WAEC)

Read lesson note on Pressure (JAMB)

Answer Details

Why an air conditioner is installed near the ceiling

An air conditioner cools the air passing through it. Cold air is denser (heavier) than warm air, so it tends to fall, while warm air is less dense and rises.

Read lesson note on Fluid At Rest (WAEC)

Read lesson note on Pressure (JAMB)

Fluid At Rest

Pressure

View Answer

Explain why it is desirable to install an air conditioner near the ceiling of a room and not close to the floor.

Related Questions

Download The App On Google Playstore