Introduction to Windows defogging in Winter

On the way home from Spring Festival, the car windows were foggy, so I found some tips on the Internet:

 

In winter driving, fog on the glass may affect the sight, especially in the case of heavy rainfall or snowfall, the fog on the glass may be more serious than usual. Many people use paper towels or rags to wipe the glass. In fact, this is the most undesirable method. It is inconvenient to say that it is dangerous to wipe the glass during driving. In fact, there are many ways to deal with the fog, and sometimes it can be very good to use it together.
The main reason for the fog in the Windows is that the temperature difference between the "internal heat and external cold" is large, so that the moisture in the car is cold on the glass, it is easy to form a fog, defogging is also a targeted measure for this main reason.

 

Method 1 Air Conditioning System

It is common practice to use the air-conditioning defogging function. Increase the air volume appropriately and turn on the cooling switch. Then the cold air will blow to the glass, and the fog will soon scatter and the effect will soon be very direct. One of the biggest drawbacks of this method is that people in the car may feel very cold and may turn off the cold air after several minutes. After a while, the fog will start hanging on the glass and then turn on the cold air.

In addition, you can also use hot air for defogging. Open the hot air to avoid additional energy consumption and drive comfortably. In fact, the effect of blowing glass with hot air is better than that of blowing glass with cold air, but the process is much slower than that of air-conditioning. When the glass is opened, the fog on the inside of the glass is indeed increased. This is because the temperature difference between the inside and outside is increased. After the hot air is used to dry the moisture in the car, the glass will become transparent and the process will be good for a few minutes, because the car is dry, it will not fog for a long time. Therefore, it is recommended that you use hot air for defogging during parking, and then continue to stay fresh on the road. In addition, enabling external circulation during the driving process can also prevent smog to some extent.

In addition to the front windshield, the sides of the window will also fog, the fog on the front side window will affect the driver to observe the rearview mirror. Currently, all cars have a single air outlet that blows the front-row side window, but it is usually very small. If we think the effect is not obvious, we can close two central air outlets, in this way, the air outlets on both sides can obtain a larger air volume.

Conclusion: The air-conditioning defogging effect is very fast, but the car will be relatively cold; the hot air effect is a little slow, such as before the hot air defogging on the road will be very fresh and warm.

 

Method 2 window streaming

If the fog is not big, you can open a gap in the Windows on both sides to let the air in the car flow. The temperature inside the car is slowly close to the outside temperature, and the fog will scatter. The advantage is that it can achieve the effect of air-conditioning without increasing fuel consumption, but this method is not available in all circumstances, such as in cold winter and rain.

Conclusion: This is a good method without rain and acceptable temperature. The disadvantage is that it is not suitable for high-speed running.

Method 3 anti-fog of detergents

Many people are familiar with the anti-fraud method to prevent smog. The proportion of washing spirit and water is around, and then it is smeared on the inside of the front and back windshield with skim cotton or a clean and soft cloth. After drying, erase the remaining watermarks on the inside of the glass. It works better with air conditioners.

TIPS: It can be valid within 10-15 days and takes a small amount of time, but the operation process is complicated.

 

[Not recommended]

Wipe with a paper towel or RAG: This method is not only cumbersome, but also will quickly restore the fog after it is wiped, and will leave water marks on the glass.

Use anti-fog spray: a lot of money, but the effect is not obvious, and the duration is very short. The effect is basically equivalent to detergent.