How Does Air Conditioning Work?

The liquid's pressure drops and it starts to dissolve into a gas. In the evaporator, the liquid changes to gas and evaporates, removing heat from the air because the heat from the air is required to change the fluid into a gas. By the time the fluid leaves the evaporator, it is a cool low pressure gas. It then returns to the compressor to restart the process. A fan is attached to the evaporator which circulates the air inside the house to blow across the evaporator fins. Because hot air is lighter than cold air, it rises to the top. There is a vent that the hot air is drawn into the air conditioner and then travels down its ducts. It is the evaporation process that draws heat out of the surrounding room.

The hot air cools the gas in the evaporator. As the heat is removed from the air, the air is cooled. It is then blown into the house through other ducts. The process is repeated until the room reaches the desired cooler temperature. The temperature is set using thermostat. When it reaches the set temperature, the air conditioner turns off. When the room starts to warm up again, the air conditioner turns back on and the process begins again.

Many people feel that air conditioners can drastically raise the electric bill. However, there are energy saving methods one can employ such as keeping windows and doors closed and keeping the shades drawn shut. This will help reduce any extra heat being added to the room. During very hot days, air conditioners can be a life saver.

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