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JOHNSON CONTROLS
16
FORM 155.35-ICOM2.EN.CE/GB (1018)
DATE: 10/30/2018
SECTION 2 – PRODUCT DESCRIPTION
HOW IT WORKS (EXHAUST GAS UNITS)
The double effect exhaust gas absorption chiller-heat-
er uses deionized water as the refrigerant and lithium
bromide (LiBr) as the absorbent. It is the strong affin-
ity that these two substances have for each other that
makes the chiller-heater cycle work.
The refrigerant used in the chiller-heater
MUST be deionized water!
The vapor pressure of the lithium bromide solution is
lower than the vapor pressure of the refrigerant. The
vapor pressure of the LiBr solution is directly related
to the amount of refrigerant (water) present in the solu-
tion with the LiBr salt and the solution temperature.
The entire absorption process occurs in almost a com-
plete vacuum.
The evaporator, absorber, condenser, low temperature
generator, and the high temperature generator are shell
and tube construction.
SP1
RP
ABS
EVA
LG-DC
T
LX
HX
SP2
XG
LG
(7
ºC
)
(37
ºC
)
(32
ºC
)
LD22963
Chilled Water
Outlet
HG ->
CLOSE
Cooling Water
Outlet
Cooling Water Inlet
Chilled Water
Inlet (12
ºC)
E -> A Ref
CLOSE
Air Purge
Blower
Air Purge
Damper
Outlet
Damper
Exhaust Gas
Outlet
(120-160
ºC)
Bypass
Damper
Inlet
Damper
Exhaust Gas
Inlet
(300-600
ºC)
Chilled Water
Cooling Water
Refrigerant
Diluted Solution
High Concentrated Solution
Middle Concentrated Solution
COND
FIGURE 2 -
EXHAUST GAS ABSORPTION CHILLER-HEATER DIAGRAM (COOLING MODE)
Содержание YHAU-CE
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