In winter and with rain, visibility is lost due to the difference in temperature between the outside and inside of the glass in a car, so that the water vapor from the environment is deposited on the inside of the moon and on the side windows.
With the drop in temperatures, rain and snow, the windows of the car tend to fog up frequently, both when entering the vehicle and when we are already driving with it. This occurs
due to temperature difference between the outside and inside of the glass in a car, so that the water vapor from the environment is deposited on the inside of the window and on the side windows. If the cold is also added, it is possible that even the mirrors are fogged, like the windows, making visibility extremely difficult.
According to the recommendations of the
RACC, the best way to dry a foggy glass is to direct the hot air to the source of the problem and thus compensate for the cold outside. For this you must
set the heating and fan to maximum.
Most of today’s cars have air conditioning. Although it seems a contradiction, you have to combine hot air with air conditioning, since it is designed to reduce humidity.
In this case recirculation should not be used, which in summer goes very well but to combat the mist is counterproductive. In addition, many of the modern cars already incorporate air conditioning, and in general they have a button whose mission is precisely to demist the windshield.
Already in circulation, to prevent the windows from fogging up again, the correct temperature must be maintained in the passenger compartment. It is enough with a comfortable 18 or 19 degrees so that the effect is noticed on the misted glass. There is no point in overwhelming yourself inside the car and wasting extra fuel by raising the temperature above 20 degrees.
In any case, the worst thing we can do to defog the glass is
rub it with a cloth, paper, or even the sleeve of the garment that we are wearing at that time. Cleaning the inside of the glass is difficult if it is not done correctly, and of course using the sleeve of the jersey is not the correct way. In fact, if we think about this, the interior cleaning of our crystals helps prevent fogging, even more so if once clean we apply a layer of anti-fog product.
When temperatures drop excessively, in addition to the mist we can find, especially in the mornings, a layer of ice that covers the windshields.
The first trick is not exactly ecological, but it is effective. Thus, it would consist of starting the car and turning on the heated rear window and the heating to the maximum.
The air will take time to get hot and you will have to direct the jet of air directly towards the windshield. But after a while, the ice will soften, making it easier for you to remove it.
Just a couple of nuances for this tactic: the first is that you don’t forget your keys inside the car when you go out to remove the ice; you can stay locked out. And on the other hand, if the windshield has frozen despite having the car in a parking lot, you better not follow this advice: you could get intoxicated with carbon monoxide.
Second, when the ice layer is not very thick, we can use a key element in any medicine cabinet. It’s about the alcohol
because its freezing point is lower than water. If, as we say, the layer is finite, it can be very useful. If it is a thicker one it will be more complicated, because it will need large amounts of alcohol.
One of the most classic images is to remove the ice with a credit card, but it can get you in serious trouble.
And is that if you are going to scratch the ice, the credit card is not the best option. The card will probably end up broken, and considering the number of cards that most people carry, it doesn’t make much sense to choose precisely one of the most difficult to replace.
Another recklessness is
try melting it with hot water. Those who come up with this brilliant idea probably end up with a broken windshield. This is due to the fact that it is made up of a very thin (and fragile) glass sheet glued to a plastic film (which avoids projections of the glass in case of breakage) and another thin layer of glass. If the glass is very cold (that’s why it has ice) and we pour hot water on it, the thermal shock will chip it like a hammer.
Finally, it can be almost as catastrophic to add salt. It may sound strange, but more than one has come up with it thanks to the times he has seen himself lying on the road to avoid the ice. But they will not have realized that the salt does not remove the ice, but rather it prevents the water from freezing. Therefore, if the water is already frozen, the process will be very slow. To that we must add
the possibilities of scratching the glass, and that the salt, very corrosive, damage the car’s sheet metal.
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