| The liquid refrigerant evaporates in the tubes of the evaporator. The latent heat of evaporation is taken from the air streaming past the evaporator fins. The air is cooled down. The refrigerant evaporates, and is sucked in by the compressor, together with the heat absorbed. |
| A choke or expansion valve is used to control the amount of refrigerant which enters the evaporator. In systems with an expansion valve, the flow is regulated such that only gaseous refrigerant exits the evaporator. |
|
|
|
