Air conditioning is divided into single cooling air conditioning and air conditioning, the working principle is the same, the refrigerant commonly used before air conditioning is freon. The characteristic of freon is that when it changes from gas to liquid, it releases a lot of heat. And when you go from a liquid to a gas, you absorb a lot of heat. (namely first absorb heat gasification liquefaction exothermic heat) air conditioning is designed according to this principle.

The compressor compresses the gaseous refrigerant into the gaseous refrigerant of high temperature and high pressure, and then sends it to the condenser (outdoor machine) for heat dissipation to become the liquid refrigerant of normal temperature and high pressure, so what the outdoor machine blows out is the hot air.

And then to the capillary, into the evaporator (indoor machine), because the evaporator refrigerants from capillary reached space suddenly increases, pressure decreases, and the liquid will vaporize refrigerants, into a gaseous cryogenic refrigerants, to absorb a lot of heat, the evaporator will become cold, indoor machine of the fan will indoor air blows from the evaporator, so indoor machine out of the cold wind is blowing; The water vapor in the air will condense into water drops when it meets the cold evaporator and flows out along the water pipe, which is why the air conditioner will give water.

When heating, there is a component called the four-way valve, so that the refrigerant flow direction in the condenser and evaporator and the opposite of the refrigeration, so when the heating is cold air blowing outside, indoor machine blowing is hot air.

In fact, I learned from junior high school physics that when you liquefy (a gas to a liquid), you have to expel heat and when you vaporize (a liquid to a gas), you have to absorb heat.

Working principle of environmental protection air conditioning:

With circulating pump continuously put out of the water in the tank, and through the cloth evenly spray water system on the evaporation filter layer, outdoor hot air into the evaporative cooling medium, CELdek in evaporative cooling medium (special material of the honeycomb filter layer, let the cooling effect is more ideal, Sweden's high-tech patent products) and water in heat exchange, due to water evaporation heat and cool the cool and refreshing, clean by low noise fan pressurized air into indoor, make indoor to outdoor hot air, so as to achieve the aim of indoor temperature.