The window is foggy and there is no air conditioning at all.

The window is foggy and there is no air conditioning at all.

The risk factor of windshield fogging can be imagined. Light will affect the driving vision, and heavy will make you completely invisible!

In order to solve the problem of window fogging, we must first understand the reason of window fogging. Generally, there are two situations:

Excessive humidity

In rainy and snowy weather, when the air humidity is too high and the window temperature is lower than the dew point temperature (dew point temperature refers to the temperature when the air is cooled to saturation without changing the water vapor content and air pressure), condensation will form on the window surface and the front windshield will fog.

The temperature is too low.

When the temperature drops, there will be a certain temperature difference between the two sides of the window. When the saturated vapor pressure of surface moisture at lower temperature is lower than the surrounding environment, water vapor will gather on the glass surface and percolate out in the form of small water droplets to form fog vapor. Note that if the dew point temperature is higher than zero degrees Celsius, fog will form; If the dew point temperature is below zero degrees Celsius, frost will form. ?

Now do you know why the windows are foggy in cold weather and rainy days? Then the hurricane breeze will tell you how to remove fog simply and efficiently!

0 1

Open the window ventilation

If the fog inside the car is not very heavy and the temperature outside the car is acceptable, we can open a gap in the windows on both sides to make the cold and hot air form convection, so that the temperature inside and outside the car is close, thus dispelling the fog.

However, this method has limitations and can only be used in low temperature weather, but it is not applicable in rainy days and high-speed driving.

02

Retreat of skylight

A car equipped with a skylight can open the skylight backward tilting mode, so that the fog on the window can be quickly dispersed by using the negative pressure principle of the skylight during driving.

It is worth mentioning that this method can not only promote air circulation, but also ensure that the temperature inside the car will not be greatly lost and rain and snow will not enter.

03

Air conditioning demisting

The most commonly used method is to turn on the air conditioner to remove fog, which is a method that many drivers will adopt, but is it cold air or warm air? Presumably, many friends have not studied it carefully. In fact, cold and warm winds have their own advantages and disadvantages.

First of all, whether cold air or warm air is turned on, in step 1, the air conditioner should be turned on first to reduce the humidity of the air inside the car, so that the fog on the glass will dissipate faster.

Theoretically speaking, it is faster to use cold air to remove fog. Turning on the cold air can reduce the air temperature near the glass in a short time, reduce the temperature difference between it and the outside of the car, prevent the water vapor from continuing to condense, accelerate the evaporation of water mist, and the fog on the window will soon disappear.

Friends who are afraid of cold can consider turning on warm air, choosing demisting blocks and drying the fog with hot air. This method will increase the temperature difference between the inside and outside of the car at first, and the defogging speed is slow, but after a few minutes, the water vapor in the car will be completely dry and there will be no fog again. The effect is also great!

However, whether using cold air or warm air, there will be a disadvantage, and the effect of solving water mist in side windows is not obvious.

04

Use antifogging agent

In fact, a better method is to spray a layer of antifogging agent on the windshield and side windows to prevent the glass from fogging. Generally speaking, spraying once a month is enough, which is very convenient and relaxed. Don't want to spend money on antifogging agent, hurricane breeze teaches you to make it yourself ~

Self-made antifogging agent is very simple. Just mix alcohol and water at the ratio of 1: 10. In fact, the use of car glass water can also play a role in defogging, because glass water also contains alcohol. Dip a dry towel in our antifogging agent and apply it on the inside of the glass. After drying, wipe off the water mark.

It should be noted that antifogging agent is a preventive measure and needs to be treated in advance. If there is fog, it will be too late!