Why is there' white smoke' when you exhale in winter, but there is no white air when you turn on the air conditioner in summer? (Kneeling for a detailed answer)

When exhaling in winter, there will be "white smoke", which is liquefaction. Because of the low temperature, water vapor will liquefy into water droplets, forming your white smoke phenomenon. The lowest temperature of air conditioner in summer can't reach the temperature in winter, so liquefaction won't happen.

Liquefaction phenomenon:

1. When the water boils, it will be white.

2. When I eat popsicles in summer, I feel white.

When the refrigerator was first opened, it was white.

Extended data:

Liquefaction realization mode

1, two main modes of liquefaction: mode 1: lowering the temperature (all gases are at all temperatures); Method 2: Compress the volume (certain temperature of some gases).

2. When the temperature is low enough, any gas can be liquefied;

Compressive volume liquefaction experiment

At a certain temperature, the volume of compressed gas can also liquefy some gases (or use both methods).

3. the method of cooling is omnipotent, and it can be liquefied if it is low enough. However, when compressing the volume, if the gas temperature is higher than its critical temperature, it cannot be compressed to liquefy it.

Baidu encyclopedia-air liquefaction