There is fog outside the window glass, and it is sultry in summer. If the air conditioner is turned on in the car, it will fog outside the window glass. What should I do? Every day! !

1. Use the air conditioning system that comes with the car.

The most common way is to turn off the fan and refrigeration of the taxi. Cold air will blow on the windshield and quickly "sweep away" the fog. The effect of this move is quick and direct, but the most? The disadvantage of the car is that people in the car will feel colder. Secondly, in addition to air conditioning refrigeration defogging, hot air can also play the role of defogging. ?

2. Windows make hot and cold air convection.

If there is not much fog and it is not very cold outside the car, you can make a gap in the windows on both sides, so that the air inside the car will convection, the temperature inside the car will gradually approach the temperature outside the car, and the fog will disperse.

3. Use special anti-fog products.

These products can be bought in auto shops or online. Before each use, spray it evenly on the window to wipe it clean, and form a transparent protective film on the glass to prevent the formation of fog. Spray times can prevent foggy weather for half a month, but the disadvantage is high cost.

4. Wash with a dry cloth.

Mix the detergent with water (the ratio is 1∶6) and apply it evenly on the car with a sponge. After drying, clean the glass with a car towel without leaving a watermark. ? General situation? Can it work? Twenty hours? There is no fog. Its principle and spraying special antifogging agent are basic? Sample, but the effect is slightly worse, is a simple and economical method.

The reason why the window is foggy:

Due to the temperature difference between the inside and outside of the car, the window is prone to fog. The reason is that the contact temperature between the window glass and the outside world is low, and the water vapor in the car condenses on the glass to form fog.

The window temperature is lower than the dew point temperature: under the condition of constant air humidity, if the window temperature is lower than the dew point temperature, it is easy to form condensation on the window surface, and the fogging phenomenon that we often see will appear on the front windshield.

There is a certain temperature difference between the two sides of the window: if the temperatures on both sides of the window are different, and the saturated vapor pressure of the surface moisture on the lower temperature side is lower than the vapor pressure of the surrounding environment, the water vapor will gather on the glass surface and percolate out in the form of tiny water droplets, forming our common fog.

In addition, dew point temperature is closely related to fogging. If the dew point temperature is higher than 0 degrees Celsius, it will fog. If the dew point temperature is below 0 degrees Celsius, frost will appear.