period two
Absorption Chiller Types
notes
refrigerantcondensed
vaporrefrigerant
high-temperature
generator refrigerant
vapor
| | | | | | |
| | | | | | |
| | | | | | |
| | low- | | temperature condenser | |
to absorber | |
| |
| | generator | Figure 25 |
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In the high-temperature generator, very high temperature steam or hot water flows through tubes that are immersed in an absorbent solution that is at an intermediate concentration. The solution absorbs heat from the warmer steam or water, causing the refrigerant to boil and separate from the absorbent solution. As the refrigerant boils away, the absorbent solution becomes concentrated and returns to the absorber.
The hot refrigerant vapor produced in the high-temperature generator migrates to the low-temperature generator, where it flows through tubes that are immersed in a dilute solution. The solution absorbs heat from the high- temperature refrigerant vapor, causing the refrigerant in the low-temperature generator to boil and separate from the absorbent solution. As that refrigerant boils away, the concentration of the absorbent solution increases and it returns to the absorber.
The low-temperature refrigerant vapor produced in the low-temperature generator migrates to the cooler condenser. Additionally, the liquid refrigerant that condensed inside the tubes of the low-temperature generator also flows into the condenser.
