ENVIRONMENTALLY FRIENDLY TECHNOLOGY SUPER ABSORPTION
F. Condenser section
The refrigerant vapor from the low temperature generator is condensed on
the cooling water heat transfer tubes of the condenser (see Figure 7). The
cooling water from the absorber flows through the condenser and removes
the heat of condensation from the refrigerant vapor from the low temperature
Figure 7. Upper shell
Low temperature generator
Refrigerant vapor
Intermediate solution
Concentrated solution
Cooling waterLiquid refrigerant
Condenser
Schematic cooling cycle
Figure 8. Direct-fired chiller / heaters
Direct-fired chiller / heaters
G. Refrigerant path and flow
In the high temperature generator, the heat source separates the refrigerant
from the lithium bromide solution.
The lithium bromide solution follows line D to E of Graph 10.
Line D to H of Graph 10 follows the refrigerant path and illustrates the change
of refrigerant vapor to liquid as it passes through the low temperature gen-
erator. The refrigerant then flows to the condenser (line H to I) where addi-
tional heat is removed. In the low temperature generator additional refriger-
ant is released from the lithium bromide solution (line F to G); this released
refrigerant travels to the condenser (line F to I) where it is condensed into a
generator section and is rejected to the cooling tower.
The condensed (liquid) refrigerant then flows to the evaporator where the
cycle starts again.
liquid. Point I represents the combination of liquid refrigerant from both the
low temperature generator and the condenser. The liquid refrigerant flows
into the evaporator where it mixes with evaporator refrigerant and is pumped
to the evaporator's dispersion trays (line I to J). The refrigerant is dispersed
on the evaporator heat transfer tubes and vaporizes; the vapor is absorbed
by the concentrated solution in the absorber causing the bromide solution to
become diluted (line J to B). The diluted solution flows to the low temperature
heat exchanger (line B to C) where the cycle is repeated.
