Why do you feel cool in an air conditioned room???☺

Rather than saying that air conditioner cools a room,it would be more accurate to say that it removes heat from the room or space.

To know the function of air conditioning ,you have to know the state of any substance related to temperature. Firstly,Apply heat to liquid,and it boils:increase the heat,and the liquid Vapourizes. Withdraw heat from a gas,and it liquefies:furthur reduce the temperature,and the liquid freezes.Air conditioning accomplishes heat transfer by forcing a chemical called Freon to cycle between liquid and gaseous form.

Process of Air Conditioning

Freon has very low boiling point-that is,attraction among molecule is weak. In an air conditioner freon is kept in a tube at very high pressure and then released  through a valve in to a low pressure evaporator.With no force pressing them together ,the molecules go on the move and the liquid boils and then vapourizes. This change of state requires heat.The Freon takes this heat from air in the room.Then the gaseous Freon passes to the compressor,which pushes its molecules together,and onto condensor tube,where it liquefies,The heat associated with fast moving molecules is lost,released to the outdoors.