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period one

Absorption Refrigeration Cycle

notes

steam or

condenser

hot water

cooling

generator

 

 

water

 

 

 

'

evaporator

&

chilled

 

%

water

heat

 

 

expansion

exchanger

 

 

 

 

device

 

(

 

absorber

)

$

Figure 19

A diagram of a typical absorption refrigeration cycle can be superimposed on this equilibrium chart to demonstrate the function of each component in the system.

Realize that the equilibrium chart can only be used for those portions of the cycle where the lithium bromide solution is present. It cannot be used for the condenser or evaporator sections. The properties of the refrigerant as it passes through the condenser, expansion device, and evaporator can be analyzed using a pressure–enthalpy chart for the refrigerant (water, in this case).

16

TRG-TRC011-EN

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