period two
Absorption Chiller Types
notes
low-temperature | | condenser | |
| cooling | |
generator | |
water | |
| | |
evaporator | chilled | |
| | water | |
low-temperature | expansion | |
heat exchanger | |
device | |
| | |
absorber | | |
absorber | evaporator spray pump | |
spray pump | low-temperature | Figure 26 |
| | generator pump |
| | |
Next, the refrigerant travels through the condenser, expansion device, evaporator and absorber in a manner similar to refrigerant travel in the single- effect absorption chiller.
The low-temperature generator pump returns the dilute absorbent solution to the low-temperature generator to be reconcentrated. This cool dilute solution passes through the low-temperature heat exchanger to be preheated by the hot concentrated solution returning from the two generators.
steam-firedhigh-temperature
high-temperaturegenerator
generatorpump
condensate heat exchanger
high-temperature | |
heat exchanger | Figure 27 |
|
The high-temperature generator pump draws a portion of the intermediate solution from the low-temperature generator and delivers it to the high- temperature generator to be reconcentrated. Some of this cooler intermediate solution passes through the high-temperature heat exchanger to be preheated by the hot concentrated solution coming from the high-temperature generator. This reduces the heat energy required to boil the refrigerant inside of the high-temperature generator. Precooling the concentrated solution returning