Filter
Top Products
16 TRG-TRC005-EN
notes
period three
Evaporators
The second major component to be discussed is the evaporator. The
evaporator is a heat exchanger that transfers heat from air, water, or some
other fluid to the cool liquid refrigerant.
Two common types of evaporators are the finned-tube and the shell-and-tube.
Finned-Tube Evaporators
A finned-tube evaporator includes rows of tubes passing through sheets of
formed fins. Cool, liquid refrigerant flows through the tubes, cooling the tube
and fin surfaces. As air passes through the coil and comes into contact with the
cold fin surfaces, heat is transferred from the air to the refrigerant. This heat
transfer causes the refrigerant to boil and leave the evaporator as vapor.
period three
Evaporators
Refrigeration
System Components
Figure 23
Finned-Tube Evaporator
refrigerant vapor
refrigerant vapor
liquid/vapor
liquid/vapor
refrigerant
refrigerant
airflow
airflow
Figure 24