What Causes Fogging on the Outside of the Car Windshield in Summer?
1 Answers
Fogging on the outside of the car windshield is caused by the temperature difference between the inside and outside of the vehicle. When the temperature inside the cabin is lower than the outside, moisture from the exterior condenses on the windshield, forming fog. This phenomenon is more common in winter. Below are solutions to prevent fogging on the outside of the car windshield: 1. Air Conditioning Defogging: Many vehicles now come with a one-touch defogging feature, which can be activated when fogging occurs, making it both convenient and quick. This method is suitable for summer rainy seasons, while in winter, using the air conditioning's hot air can help defog. 2. Air Convection: This method is suitable for very few situations. Opening the windows can increase air convection, reduce the temperature difference between the inside and outside of the car, and weaken the conditions for fog formation. While this method seems economical, it is rarely practical. If it's raining outside, you can't keep the windows open, and the incoming airflow is quite limited. 3. Anti-Fog Spray: The above two methods are emergency measures for fogging, while this one is a preventive measure. Anti-fog sprays on the market range in price from tens to hundreds of yuan, with little difference in composition—the main variation may be in their durability.
