Why Can the Air Conditioner Freon be Able to Cool?

Why does the air conditioner add freon to cool? What exactly is freon?

I believe that many friends like to blow air conditioners very much in summer. Every time I come back from the outside and enter the door, the first thing is to turn on the air conditioner, because it is really comfortable to blow the air conditioner in the hot summer. I have a hard time imagining how to spend a day without air conditioning. But I believe that many of my friends will have the same question as me, that is why the air conditioner can be cooled by adding freon. What exactly is freon? Let’s find out together.

First of all, we all know that the biggest difference between an air conditioner and a fan is that the temperature of the air conditioner is controllable, and basically it can be switched at will between 16-28°C, while the electric fan only increases the air flow rate to achieve the purpose of cooling. The reason why the air conditioner can blow cold air, the biggest “hero” is the refrigerant, which is what we often call freon. Freon is a chemical substance, and the reason why this chemical substance can be used as a refrigerant is mainly because of its relatively stable chemical properties. It is a colorless, odorless gas or liquid at room temperature, non-toxic or low-toxic. Compared with other chemically unstable refrigerants, freon has been widely used. So how does this refrigerant cool down?

Air conditioners are generally divided into internal and external units, which are condenser and evaporator respectively. First, the compressor compresses the liquid freon and sends it to the outside unit (condenser) of the air conditioner. At this time, freon will continue to dissipate heat under the action of the condenser, and eventually become liquid freon, so what we feel in the outside unit of the air conditioner is hot air. Then the liquid freon will be sent to the evaporator, and the liquid freon will become a low-temperature vaporized freon. After the blowing of the indoor unit, the vaporized freon absorbs most of the heat of the indoor air, so the indoor temperature will be lowered. Finally, the air will form water droplets when it encounters the cold evaporator, and finally, flow into the room along the pipeline, so this is the main reason why the air conditioner will flow out water.

Compared with the complicated principle of air conditioning and refrigeration, there are actually many ways to achieve cooling in life. For example, we can put a basin of water in front of the electric fan, and the water will gradually evaporate after encountering the hot air. When we start the electric fan, we can speed up the evaporation of water, the water vapor in the air will continue to absorb heat, and finally, the wind blown out by the electric fan is cold air.