48 TRG-TRC005-EN
Questions for Period 1
1 Using the pressure–enthalpy chart in Figure 68, which two points
correspond to superheating the refrigerant vapor inside the evaporator?
2 Again using Figure 68, which two points correspond to subcooling the
liquid refrigerant inside the condenser?
Questions for Period 2
3 List the three common types of condensers.
4 What two factors cause the condensing pressure to drop?
5 What are two methods of control that can be applied to air-cooled
condensers?
Questions for Period 3
6 What is the name of the device used to ensure uniform refrigerant
distribution through the multiple-coil circuits of a finned-tube evaporator?
7 What is the purpose of the baffles inside the shell-and-tube evaporator?
8 What are the three common arrangements for splitting finned-tube
evaporator coils?
9 When using a face-split coil in a constant-volume application, which section
(top or bottom) of the coil should be activated first and deactivated last?
A
G
pressure
pressure
enthalpy
enthalpy
B
D
C
E
F
H
Figure 68
Quiz
