How to turn on the air conditioner when the fog outside the car window is driving at night?

Here's how to fog up outside the window:

1. Open the window to remove the fog, if the fog is not big, we can open a gap in the windows on both sides (you can't do this when it's raining), so that the air in the car is convection, and the temperature in the car is slowly close to the outside temperature, and the fog will dissipate. The advantage is that it can achieve the effect of turning on the air conditioner without increasing fuel consumption, but this method is not available in all situations, such as in cold winter and rain;

2. Use the air conditioning system to remove the fog, we encounter the windshield fog in winter and rainy days, I believe that many friends have used the air conditioning system to remove the fog, in fact, there are some tips here. I believe that many friends have questions and controversies about the use of cold air or warm air defogging effect, in fact, this problem is two-sided, and it is discussed due to different situations;

3. Use special defogging products to remove fog, in many markets and auto parts cities and other places, there will be some stalls selling special products for defogging and anti-fogging, such as defogging agents or fog towels. This kind of defogging agent is sprayed on the inner surface of automobile glass, and wiped clean, while removing glass dirt, it can also form a thin layer of transparent protective film on the glass, which can prevent the condensation of water vapor on the glass and form a fog layer, spraying can prevent fogging for ten days - half a month. Of course, the way to spend money to save trouble, for a simple problem like fog, spending this money must not be the most cost-effective.

In winter, just turn on the external circulation, just turn on the hot air, and you don't need to turn on the air conditioner. In summer, the internal circulation is turned on, and the air conditioner is turned on to blow cold air.

However, the biggest problem with blowing hot air is that it is slow to produce results, and it takes a long time to see the effect. Moreover, it is more fuel-consuming to turn on the heater while driving, and the cost is there.

The temperature inside the car is low, the temperature outside the car is high, and the water vapor in the air outside the car condenses into small water droplets attached to the glass, which becomes the so-called fog, and the fog is composed of small water droplets.

1.Introduction: When the relative humidity reaches 100%, the water vapor in the air will condense into fine water droplets suspended in the air, reducing the visibility at the ground level, this weather phenomenon is called fog. Fog is more common in spring from February to April.

Whenever the visibility in the atmosphere is less than 1 km due to the condensation of suspended water vapor, meteorology calls this weather phenomenon fog.

Conditions for the formation of fog:

One is cooling, and the other is humidification to increase the water vapor content.

The types of fog are radiation fog, advection fog, mixed fog, evaporative fog, and smoke.

2.Cause: Saturation is reached when the water vapor contained in the air reaches its maximum. And the temperature of the air.

The higher it is, the more water vapor can be contained in the air. 1 cubic meter of air, when the air temperature is 4, the maximum amount of water vapor that can be contained is grams; When the air temperature is 20, 1 cubic meter of air can contain a maximum of grams. If the air contains more water vapor than the amount of saturated water vapor at a certain temperature, the excess water vapor will condense and when enough water molecules combine with the tiny dust particles in the air, and the water molecules themselves will bond to each other, becoming small water droplets or ice crystals.

The amount of water vapor in the air exceeds the saturation amount and condenses into water droplets, which is mainly caused by the drop in air temperature. This is also the reason why autumn and winter mornings are foggy.

3.Formation conditions:

The conditions for the formation of fog are cooling, humidification, and condensation nuclei to increase the water vapor content. A kind of fog is formed by radiative cooling, and most of them appear at night and early in the morning when it is clear, breezy, and the water vapor near the ground is relatively abundant and stable, or there is a temperature inversion, which is called radiation fog in meteorology; The other is the fog formed by the horizontal movement of warm and moist air, passing through the cold ground or water surface, and the water vapor in the air is gradually liquefied by cold, which is called advection fog in meteorology; Sometimes fog formed by both causes is called mixed fog. It can be seen that these conditions can be met in late autumn and early winter, especially in the morning of late autumn and early winter.

4.Color: Experiments have shown that when white light hits a transparent object, the light it passes through is mainly the light of the same color as the transparent object, and the other colors are absorbed by the transparent body. If a transparent object can transmit light of all colors, then the transparent object is colorless, such as ice.

However, when the water turns into fog, many reflective surfaces are formed. At this time, the light cannot pass through, but is reflected, that is, the light of various colors is reflected, so the fog becomes white.

The cause of fogging in the windshield of a car is caused by the temperature difference between the inside and outside and the humidity of the air.

If the temperature inside the car is high and it is cold outside, the moisture inside the car will condense onto the cold glass, forming a fog. At this time, it is usually necessary to turn on the air conditioner and adjust to the position of blowing glass, and use warm air to blow the fog away. But the heat brings a larger fog for a short time before the glass is heated.

Therefore, you can use cold air to blow the glass, or open a little window, so that the temperature of the glass is consistent inside and out, and there will be no fogging.

In some parts of the south, the opposite is true, where the temperature inside the car is low and the outside is hot and humid, and the moisture will adhere to the cooler outside of the glass. It can only be removed with wipers. Or pay attention to the air conditioning gear to prevent the cold air from blowing into the glass inside the car, and it will also avoid fogging outside.

Fogging treatment method for opening the air conditioner window of the car: 1. Solution: purchase special defogging products.

While removing glass dirt, it can also form a thin layer of transparent protective film on the glass, which can prevent the fog layer formed by the condensation of water and lack of vapor on the glass; 2. Open windows for convection. The temperature inside the car slowly approaches the temperature outside the car, and the fog dissipates. with an air-conditioning system.

Chang Rubber turns on the fan and refrigeration or heating switch in the car, so that the air conditioner and heating blow on the glass and soon the fog will disperse, and the effect is very fast and direct; 3. Fogging cause: The temperature inside the car is low, and the temperature outside the car is high, and the water vapor will condense into water on the glass. Notes:

If using an air conditioner to defog, be sure to use a warm air to defog before driving and wait for the fog to completely disappear on the road. Homemade "anti-fogging agent": washing spirit and water press 1:

10 of the mix, then use a clean and soft cloth dipped in it to apply it to the inside of the front and rear windshields, or pour it into a small watering can. 3. No matter which method is used to defog, it must be carried out before driving.

First turn on the air conditioner heater, then press the defogging button, let the warm air concentrate on the front windshield, and then open a gap in the windows on both sides to let the air in the car convection, the temperature in the car is slowly close to the outside temperature, and the window will not fog up.

The fogging of the car window is mainly the temperature and humidity of the car and the outside of the car are not the same, in the winter the glass fogging is in the car, because the temperature of the parking space is low, the temperature of the air conditioning in the car is relatively high, and the condensation phenomenon is produced.

Winter window fogging can also use defogging agent to remove fogging, first spray the defogging agent to the inner surface of the car glass, and wipe clean, while removing the glass dirt, it can also form a protective film to prevent the condensation of water vapor on the glass and form a fog layer, spray wipe a can be anti-fog section quietly answer for about ten days. You can also mix the anti-fogging agent yourself and mix it with detergent. Wash spirit and water press 1:

Mix it in a ratio of 10 and apply it to the inside of the front and rear windshields with a clean, soft cloth.

Photo by Liao Wei of Pacific Automobile Network).

The solution to the fogging of the air conditioning glass when driving at night is as follows: 1. Blowing cold air: In the case of small fog, you can properly open the windows on both sides to let the air convection, so as to eliminate the temperature difference on both sides of the windshield, and the fog is naturally difficult to form.

Or turn on the air conditioner and cool air can remove the fog in a very short time. The advantage of both methods is that they can be effective quickly, and the disadvantage is that they should not be carried out for a long time when the weather is cold or snowy or rainy. 2. Blowing hot air:

Blowing cold air is a situation that has a quick effect but does not cure the root cause, while blowing hot air can fundamentally solve the problem of glass fogging. The fog doesn't come back after the hot air is turned off, and it doesn't make the people in the car even worse in the cold winter. However, the biggest problem with blowing hot air is that it is slow to produce results, and it takes a long time to see the effect.

And the cost of fuel consumption is a bit high when driving while driving the heater. 3. Defogger: The principle of defogging agent is very simple, spraying a layer on the windshield can form an effective protective film, so as to prevent the condensation of water mist.

However, the validity of this protective film is very short, and it requires repeated spraying over a long period of time to maintain the effect.

You can open a little window while the car is driving to ensure that the air in the car is empty, and the temperature inside the car is balanced with the temperature outside the car, so as to solve the problem of glass fogging. The front windshield and window glass of a car are sometimes prone to fogging during the summer air conditioning, which is caused by the extremely low outside temperature of the air in the cabin of the car. 1.

When the fog is not large, you can properly open the windows on both sides to let the air convection, so that the temperature difference on both sides of the windshield is eliminated, and the fog is naturally difficult to produce. Or turn on the air conditioning cold air, which can eliminate the fog in a short time. The advantage of these two methods is that they work quickly, and the disadvantage is that they are not suitable for long-term use when the weather is cold or when it is snowing or raining.

Otherwise, the fog will disperse, and people will catch a cold. 2.Hot air blowing is a quick but temporary solution, and hot air blowing can solve the problem of glass fogging at the source.

Once the heat is turned off, the fog will not start again, and it will not make the people in the car frost in the cold winter. However, the biggest problem with blowing hot air is that it takes a long time to see results. In addition, warm air driving consumes a lot of fuel, and the cost is a bit high.

3.Defogger The principle of a defogger is simple. Spraying a layer on the windshield creates an effective protective film that prevents water mist from condensing.

However, this protective film has a short shelf life and requires repeated spraying over a long period of time to maintain the effect.