How an Air Conditioner Chiller Works

Air conditioners are basically like refrigerators, minus the insulated box. Refrigerators cool the insides of an insulated space, whereas air conditioners cool the interiors of your room or your house by cooling the air and extracting the heat from the area. Both use the same cooling system in refrigeration, called Freon, and the Freon evaporation cycles in both units are essentially the same. While a chiller is present in refrigerators, it is also a fundamental element of an air conditioning system.

It's impossible to understand how air conditioners without understanding how an air conditioner chiller woks. The three vital parts of an air conditioning unit are the compressor, condenser and evaporator. The condenser and evaporator are components of the air conditioner's chiller. They are also known as the heat exchanger units.

  1. The condenser unit compresses the refrigerant gas with a normal cooling cycle used to direct expansion, and the evaporator unit holds the water or gas exchanger where gas removes or adds heat to the water.
  2. The condensing unit works with the air handler to absorb the vaporized refrigerant derived from it. Because of high pressure and low temperatures, it liquefies the vapor and carries out the cooled water to the fan coils, which will deliver the treated air to the interiors of your house.
  3. Together with the compressor, the condenser is exposed to the outdoors, and the evaporator is usually located inside the house.
  4. When the evaporation process occurs, the refrigerant flows into the heat exchanger, but the flow of heat is reversed, making the cool refrigerant absorb heat from the air flowing outside. It thereby cools the air and boils the refrigerant. It extracts heat from the air, and cool air is distributed throughout the house.
  5. The cooling process will repeat, going from the heat and circulating to the compressor as a low pressure gas, which then channels through the air conditioning chiller to continue the cooling process again until the air conditioner detects that the room has achieved the appropriate temperature.

In a chilled water system, air conditioners are placed on the roof or behind the building. The chilled water, which ranges between 40 and 45 degrees Fahrenheit, is distributed to heat exchangers, piped throughout the building and attached to air handlers. In substantially sized systems, the use of cooling towers can augment the efficiency of the cooling system.

The chilling system can be incorporated with other heating systems such as solar panels, boilers and others. The condensing unit of the air conditioner can largely be amplified with an outdoor fan to help distribute the cool air evenly throughout the room. To optimize the function of the condensing unit, remove potential obstructions like leaves or twigs, as it can impede the performance of your chiller and the cooling system as a whole. Because this part of the air conditioner is exposed outdoors, you need to regularly check and clear away barriers. If you are going to have your air conditioning system inspected, ensure that you include a complete condensing unit check up.


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