Why does the windshield fog? How to defog quickly? It is safe for beginners to learn more.

As the weather gets colder and colder, many car owners will soon find that the windshield of their cars will fog, especially when it is rainy and the windows are closed. It's only a slight fog at first, but if you turn a blind eye to it, it will soon become a dense fog and water droplets will appear. Fogging on the windshield will not only affect the driver's mood and speed, but also affect the driver's sight, which may lead to traffic accidents.

Before discussing how to defog effectively, let's first understand the reason why the car glass fogs. First, introduce a word "dew point". Take it easy. This word is just a concept in the solar terms. It actually refers to the temperature, which is actually the temperature required for the gaseous water contained in the air to reach saturation and condense into liquid water. When the temperature is low to a certain extent, the invisible gaseous water in the air will condense into invisible liquid water and run out, and it will become fog when suspended in the air.

Simply put, when the temperature drops, gaseous water becomes liquid water to form fog and dew, and when the temperature rises, it becomes gaseous water. Speaking of this, we should understand that there are two reasons that affect the fogging of automobile windshield, one is temperature and the other is humidity. If you understand the principle, you can prescribe the right medicine. So how to get rid of the fog on the windshield most quickly and effectively? The most direct, fast and effective method is: cold air defogging. Turn the wind direction to the position where the windshield blows, turn the wind switch to the position of 1 or 2, and blow 15 seconds.

However, there is a defect in cold air defogging, that is, the windows will fog again after the cold air is turned off, and it is unbearable to blow cold air in winter. Therefore, it is also a good way to demist with warm air. Turn up the warm air and adjust the temperature to the highest grade, which will reduce the humidity in the car on the one hand and increase the temperature in the car on the other. When the humidity decreases, there will be less water vapor in the air, and you won't make trouble in the window. There are three ways to reduce humidity: adjust the air supply mode of air conditioner to "external circulation"; Press the air conditioning key of the air conditioner; Reduce the ventilation of the window glass on both sides. These methods can help you eliminate the fog in the window as soon as possible. Have you learned?

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.