Know More: Air Conditioners

Science & Technology

An air conditioner helps cool spaces. Certain chemicals are used in air conditioners that transfer heat from the air inside a home to the outside. One example of such chemicals is a refrigerant called Freon. Often, the air conditioner runs out of this 'gas' and needsto ber efilled in order to cool effectively. 

  • Compressor
  • Condenser
  • Evaporator
The compressor and condenser are located on the outside of the air conditioner and the evaporator is on the inside of the house. A fan is connected to the evaporator, which circulates the air inside the house. Hot air is lighter than cold air, so the hot air in the room rises to the top of the room. The chemical refrigerants arrive at the compressor in liquid form at a cool temperature and low pressure. The compressor squeezes the fluid and packs the molecules closer together, increasing their temperature. When the fluid leaves the compressor it is a hot and high pressure gas. The fans in the compressor cool the gas down and it changes from a gas to a liquid under high pressure. The liquid goes into the evaporator through a very tiny, narrow hole. Here it begins to evaporate into a gas. As the liquid changes to gas it extracts heat from the air around it and cools the air down. This cycle keeps repeating itself, thus cooling the air that passes through the air conditioner.

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