Working principle of fan airflow in air-conditioned room

To put it bluntly, the working principle of air-conditioning duct machine is actually a device for cold and heat exchange. This device mainly uses air as the transmission medium to produce cold energy through the concentration of refrigerant, then cools and heats the fresh air, and finally mixes it with the return air and delivers it to our room. Once there is no fresh air, the return air will be heated or cooled, and finally it will be delivered to our room like fresh air.