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TRG-TRC011-EN 11
period one
Absorption Refrigeration Cycle
notes
Inside the condenser, cooling water flows through tubes and the hot
refrigerant vapor fills the surrounding space. As heat transfers from the
refrigerant vapor to the water, refrigerant condenses on the tube surfaces. The
condensed liquid refrigerant collects in the bottom of the condenser before
traveling to the expansion device.
In absorption water chillers, the cooling water system is typically connected to a
cooling tower.
From the condenser, the liquid refrigerant flows through an expansion device
into the evaporator. The expansion device is used to maintain the pressure
difference between the high-pressure (condenser) and low-pressure
(evaporator) sides of the refrigeration system. In this example, the expansion
device is a throttling pipe, which is a long section of pipe with an orifice
restriction in it. It creates a liquid seal that separates the high-pressure and low-
pressure sides of the cycle.
cooling
cooling
water
water
refrigerant
refrigerant
vapor
vapor
liquid
liquid
refrigerant
refrigerant
condenser
condenser
Figure 13
liquid
liquid
refrigerant
refrigerant
expansion
expansion
device
device
evaporator
evaporator
Figure 14