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TRG-TRC011-EN 25
period two
Absorption Chiller Types
notes
In the series flow cycle, the dilute solution from the absorber is pumped
entirely to the high-temperature generator. As the refrigerant boils away and
migrates to the low-temperature generator, the absorbent solution becomes
concentrated. The resulting intermediate solution then flows to the low-
temperature generator, where it is further concentrated by the refrigerant vapor
that was created in the high-temperature generator. The concentrated solution
then flows back to the absorber to repeat the cycle.
The series flow cycle has been the mainstay of most double-effect absorption
chiller designs for many years. It is simple because it requires only one
generator pump and is fairly straightforward to control. The series cycle,
however, requires a significantly larger heat exchanger to obtain similar COPs
to the other cycles.
absorber
absorber
low
low
-
-
temperature
temperature
generator
generator
generator pump
generator pump
high
high
-
-
temperature
temperature
generator
generator
Figure 29