3-4
3-3. FLOWCHART OF CHILLER AND FUNCTION OF EACH SECTION
FLOW DIAGRAM
a) EVAPORATOR
Refrigerant is dispersed on the heat transfer tubes of evaporator. Chilled water through the tubes is
cooled by the latent heat of vaporized refrigerant.
b) ABSORBER
Concentrated solution is dispersed on the heat transfer tubes of absorber. The refrigerant vapor from
evaporator is absorbed on the tubes by the concentrated solution. Cooling water through the tubes is
heated by absorption heat.
c) HEAT
EXCHANGER
Diluted solution, after leaving the absorber section, passes through the heat exchanger where it is
heated by the concentrated solution. The concentrated solutions are cooled by the diluted solution.
This cooling process of the concentrated solution allows for greater absorbing power due to its lower
temperature.
d) GENERATOR
The diluted solution from the heat exchangers is heated in the generator. It releases refrigerant vapor
and concentrated solution by the condensation.
e) CONDENSER
The refrigerant vapor from the generator is condensed on the heat transfer tubes of condenser.
Cooling water from the absorber is heated by condensation heat.
f) PURGE
UNIT
Gather the non-condensable gas within the Chiller and store it in the purge tank.
Rupture disk
DT16
DT15
Condenser
Generator
Cooling water
Inlet
69PR
PCH
Inlet
Chilled water
Cooling water
Outlet
Outlet
DT7
DT5
69CH
DT1
DT6
12
DT
DT3
DT2
DT10
SV6
11
DT
SV4
D2
D1
SV
3
V1
SV1
V2
V3
Purge unit
Purge tank
Evaporator
Absorber
Refrigerant pump
Absorbent pump No.1
Absorbent pump No.2
Heat exchanger
Refrigerant blow valve
Purge
pump
B valve
Driving hot water
Hot water
control valve
