Evaporation

Evaporation:

Evaporation, the process by which an element or compound transitions from its liquid state to its gaseous state below the temperature at which it boils; in particular, the process by which liquid water enters the atmosphere as water vapor. Evaporation, mostly from the sea and from vegetation, replenishes the humidity of the air. It is an important part of the exchange of energy in the Earth-atmosphere system that produces atmospheric motion, and therefore weather and climate. The rate of evaporation depends on the temperature difference between the evaporating surface and the air, the relative humidity, and wind.

  • Evaporation is one kind of vaporization.
  • Vaporization is a phase transition from the liquid or solid phase to vapor (Boiling,evaporation,Sublimation).
  • Vaporization is the opposite of condensation.
Phase_change

Phase_change, wikipedia.org

We see condensation everywhere around us in life, and you notice that your cold drink glass or can get wet, also when you see your car glass every morning foggy wet

so condensation is typically a cold surface pulling liquid out of vapor this transformation of a vapor (or Gas) to a liquid

  • Boiling transforming liquid to vapor (or Gas) will observe energy
  •  Evaporation transforming liquid to vapor (or Gas) will observe energy

*Energy definition here explains the heat

To make water transforming from liquid status to vapor you can apply direct heat by boiling water, but in here is another way to evaporate the water by using high-velocity air flow on the water surface

This process we call it “Evaporative cooling”, and this is how evaporative outdoor air coolers work

” The process to convert one liter of water to vapor you need about 2300 BTU “

References

BEK has written 12 articles