How an Air Conditioning Work

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Published: 06th November 2012
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Have you ever wondered how an AC system works by giving you that seemingly endless cool breeze, most especially during the hot summer? Basically, air conditioning works like a kitchen refrigerators. A lot of people believe that this equipment is merely adding cold air to a room.† Did you know that it is actually drawing heat away from the area rather than giving cold air? This is why the space has less heat where the occupants feel cooler.

Air conditioning actually uses the method of evaporation. In comparison, it is like applying alcohol on your skin which results to a cold feeling when the liquid evaporates.

Chemicals Used

Refrigerant is the actual chemical that is kept inside the AC units. It has the exceptional ability to covert from it gaseous state to liquid state in a short period of time. This chemical which is specifically called freon is usually utilized in air conditioning units. However, this is not the only chemical used since there are other types that are also available. The chemical component is pumped into the unit at the time that it is still in the factory. The manufacturers use lubricating oil for the unitís compressor. This is an actual essential part of the process of making the AC unit.

Air Conditioning Parts

Typically, the equipment would create a closed system which consists of a thermostat, expansion valve, a condenser and a compressor.† There are also thin metallic fins that dissipate heat quickly while the motorized fans guide in circulating the air. Most people perceive that the casing housing or often called the box is the heaviest part of a typical AC unit. Actually, it is the compressor because it is strong and sturdy enough to handle great amounts of pressure.

To comprehend how it all come together, here is the actual process on how the air conditioning unit works:

The refrigerant enters the compressor that is usually found beneath the unit. In this stage, the refrigerant is still a cool gas.

The gas enters the interior chamber of the compressor.

The compressor compresses the refrigerant which makes the gas turn into a hot gas with an increased pressure.

The hot gas proceeds into sets of condensing coils which is outside the area being cooled.

The heat then gets expended to the air outside.

When the refrigerant reaches the coilsí end, it becomes cooler and into a liquid form. Remember, the liquid is still under an increased pressure. The pressure is like that of an aerosol can.

The refrigerant that has turned into liquid is then forced into a small opening which is the expansion valve.

In that end, the liquid refrigerant comes out in small amounts at a time.

Evaporation then starts while it is traveling into another group of coils. This is the specific process where the heat is drawn out of the area.

The motorized fans then blow to the direction of the metal fins which is found over the coils. This results to the cooling of the area.

The liquid refrigerant turns back into gas again and the entire process repeats all over again.

Learning about the process is helpful in a lot of ways. For one, you now know what goes on inside your air conditioning unit. You can understand a bit of the technicalities behind every issue your unit may have. You may even be able to detect problems before you can call for a repairman.

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