The evaporator is a heat exchanger made up of copper tubes and
aluminum (finned), where the heat exchange between the coolant circulating in the interior and the ambient air circulating between the fins takes place. The refrigerant enters the saturated mixture form and, as it passes through the evaporator absorbs latent heat, until the entire mass of refrigerant fluid is in the form of vapor, thereafter it begins to absorb sensible heat and overheats. Thus, at the outlet of the evaporator, the refrigerant fluid is in the form of superheated steam at low pressure.