How Long Can the Internal Circulation Generally Be Turned On?
1 Answers
Generally, it is about 2 hours. If the internal circulation is turned on for too long, you may feel stuffy, and it is time to switch to external circulation to inhale fresh air from outside. Here are some related introductions: 1. Internal Circulation: The internal circulation state closes the airflow channel between the inside and outside of the car. Without the fan, there is no airflow circulation. When the fan is turned on, the inhaled airflow only comes from inside the car, forming an internal airflow circulation. The main purpose of internal circulation is to effectively and promptly prevent external dust and harmful gases from entering the car, such as when driving through areas with smoke, dust, unpleasant odors, or when driving closely with other vehicles, blocking harmful exhaust emissions from the vehicle in front. Another function is to maintain warmth. 2. Combined Use: The use of internal and external circulation should be combined with the air conditioning and heating system. Using external circulation allows you to breathe fresh air from outside. When driving on the highway for a long time, the air inside the car may become stale, making people uncomfortable, and opening the window is not an option. In such cases, external circulation should be used to bring in some fresh air. In winter, if the heating feels too hot, you can turn off the fan and open the external circulation to maintain the temperature inside the car while also getting fresh air, which will make you feel more comfortable.
