Air conditioning
is one of the remarkable inventions in the past century. With
air conditioning one no longer has to endure the heat especially during
the summer months. But have you ever thought
of how air conditioning works?

What most people
think about air conditioning is that it controls the temperature.
But this is not just about controlling the temperature; it also involves
lessening the humidity and cleansing the air. People confuse it
with air cooling, which is simply forcing cold air into a space.

Air conditioning
is similar to the process used in a refrigerator. If you know
the basic process employed in a refrigerator, you’ll know that it
spreads a refrigerant via a structure of coils. The refrigerator
has a compressor which compresses the gas refrigerant and transforms
it into liquid. The liquid moves through the system of coils,
and then absorbs the heat.

We all know that
most households make use of air conditioning units that
are placed in the back and side yard. For bigger buildings or
spaces, large air conditioning systems are used.

But the size of
the air conditioning unit is irrelevant since all air conditioners use
the same principle. Let’s go back to the way refrigerators function.
The process employs evaporation, with both air conditioning unit and
refrigerator making use of a refrigerant, which is a gas in its normal
state. This is called as Freon, and may be one of many types or
composition. Cooling the interiors of the refrigerator, or a room
in the case of the air conditioner unit, works through a cycle.

The compressor compresses
the refrigerant gas, making it hot by putting a lot of pressure in it.
Since it is now hot, the gas spreads through the coils outside of the
unit, and it dissipates the heat either in the room or inside the refrigerator.
Then the heat cools the refrigerant gas, and turns it back to its liquid
state. When it becomes liquid the refrigerant goes through another
part of the system referred to as expansion valve. The refrigerant turns
cold since it is exposed to lower pressure, and it continues to spread
through the inside of the refrigerator or the air conditioning unit.
In the case of an air conditioning unit, the cold air is propelled into
the room through a fan. In the case of the refrigerator, the cold
refrigerant attracts the heat inside.