Is the cold air circulating inside or outside in summer?

In summer, air conditioning cold air is used alternately by internal circulation and external circulation, because the internal circulation can block the warm air outside the car, making the temperature inside the car rapidly reduce, making people feel cooler and more comfortable. However, after opening the cycle for a period of time, it is also necessary to open the external cycle, which can allow fresh air outside the car to come in and avoid the air in the car to cause human discomfort.

In addition, when the vehicle encounters congestion on the road, pay attention to closing the outer cycle and opening the inner cycle. Because there are more car exhaust in the outside air during the traffic jam, and it is also relatively dirty, if the external circulation is closed, the outside air can be separated to avoid the external dirty exhaust entering the car.

Although the internal cycle has the advantages of fast cooling and fuel saving, opening the internal cycle for a long time is not conducive to the air circulation in the car. The external circulation can keep the air in the car fresh, but the fuel consumption will be relatively large, and the cooling or heating speed will be slow. Therefore, during the driving of the vehicle, the driver can also adjust the internal and external circulation system in the car according to the actual needs of the air condition outside the car.