Should You Use External or Internal Air Circulation When Sleeping in the Car?
1 Answers
When sleeping in the car, it is recommended to use external air circulation. The function of external circulation is to replenish fresh air and maintain airflow between the inside and outside of the vehicle, ensuring clean air inside the cabin. Internal circulation, on the other hand, effectively prevents external dust and harmful gases from entering the car, and it provides faster cooling or heating effects. The differences between external and internal circulation are: 1. Circulation Method: External circulation heats or cools the air from outside the car before sending it inside, facilitating gas exchange between the interior and exterior. Internal circulation recirculates the air inside the car after heating or cooling it. 2. Symbols: The external circulation icon depicts an unenclosed car with an arrow pointing from outside to inside, while the internal circulation icon shows a closed car with a circular arrow inside.