JOHNSON CONTROLS
15
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
2
LD20142
The principle of refrigeration is the exchange of heat.
In absorption liquid chilling, there are four basic heat
exchange surfaces: the evaporator, the absorber, the
generator, and the condenser. See
Like any refrigeration system, absorption chilling uses
evaporation and condensation to remove heat. The ab-
sorption cycle uses water as the refrigerant and lithium
bromide (LiBr) as the absorbent. It is the strong affin-
ity that these two substances have for one another that
makes the cycle work. The entire process occurs in al-
most a complete vacuum.
CHILLER-HEATER COMPONENTS
The absorption chiller-heater consists of the following
components:
•
evaporator
•
absorber
•
condenser
•
generators
•
solution heat exchangers to heighten the cycle
efficiency
•
pumps to circulate the refrigerant and solution in
the cycle
•
purge unit to remove non-condensable gas from
the machine
CONTROL PANEL
The absorption chiller-heater comes with a factory
mounted and pre-wired control system. The control
panel enclosure is equipped with a hinged access door
with lock and key. The control panel includes a touch
panel showing all system parameters in various lan-
guages with numeric data in metric units. For details
.
The unit is also equipped with two methods to start and
stop operations:
•
touch panel
•
external signal
SECTION 2 – PRODUCT DESCRIPTION
FIGURE 1 -
YHAU
-
CGN/H-
120~300EX(H/S) AND 360EX~1600EXW3(H/S)
F
G
H
L
A
D
C
E
I
J
K
B
M
N
ITEM
COMPONENTS
A
Cooling Water Outlet
B
Condenser
C
Low Temperature
Generator
D
High Temperature
Generator
E
Burner Fan Motor
F
Natural Gas Inlet
G
Burner Fan
H
Control Panel
I
Solution Pump
J
Cooling Water Inlet
K
Chilled/Hot Water Inlet
L
Evaporator
M
Chilled/Hot Water Outlet
N
Absorber
