Evaporation

Evaporation takes place in an evaporator, which is a part of a cooling system. The change of state from liquid to gas of the cooling media flowing through the evaporator is known as evaporation.

Evaporation takes place in an evaporator, which is a part of a cooling system. The cooling media flowing through the evaporator enters the inlet in liquid form. When a cooling media is provided with enough heat in an evaporator, it reaches its boiling point, and begins to change state into gas. This change of state from liquid to gas is known as evaporation.

An expansion valve is placed between the condenser and the evaporator as shown in the diagram below. This valve reduces the pressure to the evaporation pressure point. When the cooling media has passed through the expansion valve, it enters the evaporator, where evaporation will begin when heat is added from the surroundings.

Changing the type of cooling media and evaporation pressure will cause the boiling point to change. This makes it possible to control the evaporation temperature, i.e. the temperature at which the evaporator absorbs heat.

The diagram shows the function of an evaporator in a cooling system.





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