An air conditioner provides us with a comfortable environment to be in. A lot of work happens inside to machine in order for that process to happen. Air conditioners use chemicals that easily convert from a gas to a liquid and back again. This chemical is then used to transfer heat from the air inside of the house to the outside. The machine in general has four main parts. It contains a condenser, an evaporator, a metering device, and a compressor. The compressor and condensers are usually located at the outer portion of the air conditioner. The evaporator is usually located in the inside of the house and can also sometimes be part of a furnace.
The chemical arrives at the compressor as a cool, low pressure gas. The compressor pumps the chemical. This packs the molecules of the chemical closer together. The closer the molecules are together, the higher its energy and its temperature. Afterwards, the chemical leaves the compressor as a hot, high pressure gas and then flows into the condenser. The condenser is a part of the unit that is usually with a lot of metal “fins” which help the heat go away more quickly.
When the chemical leaves the condenser, its temperature is much cooler and it changes from a gas to a liquid under high pressure. The chemical later goes into the evaporator usually a tiny narrow hole. On the opposite side, the chemical’s pressure drops. When that happens, it begins to turn into gas. As the chemical changes to gas and evaporates, it extracts heat from the air around it. The heat in the air is needed to separate the molecules of the chemical from a liquid to gas.
By the time the chemical leaves the evaporator, it is a cool, low pressure gas. The cycle begins all over again.
There are many different types of air conditioning systems.To learn a little about each type of unit and what they do:
What is a Packaged Unit?
What is a Split System?
What is a PTAC unit ?
What is a Mini Split?