[China Glass Network] "The weather is getting cold. It rains a few days ago, and the tide is cold. The front windshield is foggy. I am all panicked." Miss Guo, who lives in Jiaojiang, just bought a car, and every day Driving to the road and bridge to work, in the face of this old problem that seriously affects the safety of driving, she is at a loss. "I had to turn on the cold air conditioner and blow it against the glass. I can open the air conditioner again in the cold weather, and I will follow the cold, which is not enough."
The reporter learned that the reason for the fogging of the window is "internal heat and external cooling". When the temperature difference between the inside and outside of the car is large, the water vapor exhaled by the occupant in the car will condense into water vapor when it encounters cold glass. This is an old problem, but it is not a small problem. Once the line of sight is blocked, accidents may occur within a few seconds. Therefore, it is essential to remove fog in cold rainy days.
The day before yesterday, the reporter interviewed Mr. Han, who has 5 years of driving experience, Lin coach of Wanli Automobile School, and Master Su of Shunfeng Auto Repair Shop, to summarize the three methods with higher usage rates.
More primitive approach: wipe with a dry cloth or paper towel
Advantages: Immediate shortcomings: laborious, unsafe, the original method of leaving marks after wiping, is to wipe the glass directly with a dry cloth. This kind of scene must have been seen by many citizens: the old drivers always have a towel, and they rub the glass when they stop at the red light. The disadvantage of this method is that it is more laborious, and there will be traces on the glass after wiping, and it will soon fog again. If you drive while driving, it is easy to cause an accident.
More convenient way: blow with hot air
Advantages: no distraction Disadvantages: slow effect, the rest of the window is still foggy. The second method is to blow directly with hot air. However, this method works relatively slowly, and when the vehicle is just turning on the hot air, the fog on the front windshield is getting bigger and bigger, and the glass will gradually become clear after waiting for ten minutes.
More creative approach: detergent with dry cloth
Advantages: Good preventive effect Disadvantages: To deal with the owner in advance, Mr. Han is very happy to accept new things. On the issue of “cold fog removalâ€, he collected a lot of materials online and tested “Dishwashing detergent with dry cloth rubbing†Method, the effect is not bad. Choose a sunny day, take the kitchen detergent with water (about 1:6), evenly spread it on the glass inside the car with a sponge, and then dry it with a dry cloth after drying, do not leave traces. In general, the effect lasts for half a month.
The after-sales staff of the 4S shop told the reporter that this method is feasible because the detergent contains surfactant, which can change the surface tension of the water, so that the droplets quickly condense into large water droplets, which can play an anti-fog effect. "However, this is a preventive measure that must be dealt with in advance. If it is found that the fog is coming again, it is too late."
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