车窗起雾的原因汽车在空气湿度一定的情况下,车窗温度低于露点温度时,就会在车窗表面形成结露,这也就是我们经常看到的前风挡起雾现象。车窗两侧出现一定的温差,温度低的表面水分的饱和蒸汽压低于周围环境的蒸汽压时,水汽就向玻璃表面聚集,以微小的水珠形式渗析出来而形成雾气。如果露点温度高于零摄氏度,则形成结雾现象;如果露点温度低于零摄氏度则变成结霜。 The reason the window fogging Car in the case of air humidity, the window temperature is below the dew point temperature, it will form condensation in the window surface, which is what we often see the front windshield fog phenomenon. A certain temperature difference appears on both sides of the window. When the saturated vapor pressure of the surface water with a low temperature is lower than the vapor pressure of the surrounding environment, the water vapor will gather on the surface of the glass and form a mist with tiny drops of water. Fog formation occurs if the dew point temperature is above zero degrees Celsius and frosts if the dew point temperature is below zero degrees Celsius.