period two
Absorption Chiller Types
notes
high-temperature | | low-temperature |
| generator |
generator | |
| |
absorber
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.
