Driving in rainy days to remove fog: inner circulation or outer circulation?
On a rainy day, the other side of the city is quietly awakened. Pedestrians rush through the streets, traffic rushes by, and every drop of rain plays a unique music for the city. For drivers who drive in the rain, especially those who drive in the rain and have fogged out windows, the challenges they face are more specific and practical. Fogging the windows is a common problem when driving in the rain, and one of the ways to solve this problem is to use the car's internal or external circulation system. So, when driving in rainy days to remove fog, should you choose the inner circulation or the outer circulation?
First, let's understand the basic concepts of inner and outer loops. The internal circulation refers to the circulation of air in the car, while the external circulation is the exchange and circulation of air inside and outside the vehicle. On rainy days, there is a large temperature difference between the inside and outside of the car, and water vapor is easy to condense on the car windows, forming fog. In order to effectively remove fog, we need to start with the cause of fog.
Fog is mainly caused by the temperature difference between the inside and outside of the car, which causes water vapor to condense on the car windows. Therefore, the key to eliminating fogging is to balance the temperature inside and outside the car. At this point, both the inner and outer loops have their roles, but in very different ways.
The main purpose of using internal circulation is to isolate cold or hot air from the outside and prevent it from entering the car, so as to keep the temperature in the car stable. When driving in rainy weather, if the windows are already fogged, turning on the internal circulation can effectively prevent the cold air from the outside from entering the car and slow down the formation of fog. At the same time, if the car has air conditioning and refrigeration function, you can also use cold air to reduce the temperature in the car and make the fog dissipate quickly. However, prolonged use of the internal circulation may lead to poor air quality in the car, as the air inside the car cannot be exchanged with the outside world.
In contrast, the main function of the external circulation is to introduce fresh air from the outside into the car and exchange it with the air inside the car. When driving in rainy weather, if you use external circulation, you can get the moisture and fog out of the car in time and bring in fresh air at the same time. However, if the outside air temperature is low, using the external circulation directly may cause the temperature inside the car to drop and increase the generation of fog.
So, since there are pros and cons to both internal and external circulation, how do we choose?
First of all, if the fog in the car has been generated in rainy days, the first thing to do is to turn on the air conditioning and refrigeration function, and turn on the internal circulation. This quickly lowers the temperature inside the car and allows the fog to dissipate. However, please note that this method is only suitable for defogging for a short time, and if you drive in rainy weather for a long time, you also need to turn on the external circulation in time to ensure the air quality in the car.
Secondly, if there is not much fog in the car, quality author certification recruitment