period two

Condensers

notes

Vary Condenser Water Flow Rate

cooling tower

condenser

diverting

variable-speedvalve drive

cooling tower

bypass pipe

condenser

Figure 18

It is more common, however, for a water-cooled condenser to be connected to a cooling tower.

In this case, typical methods for modulating the water flow through the condenser include either using a variable-speed drive on the condenser water pump or using a diverting valve and pipe to bypass the condenser. The variable-speed drive on the pump modulates the amount of water pumped through the condenser. The diverting valve modulates the water flow through the condenser bundle by diverting some of the cooling water around the condenser through the bypass pipe, directly back to the cooling tower.

Each of these options has the effect of varying the flow rate of water through the condenser, ensuring an acceptable condensing pressure and temperature.

Vary Entering Water Temperature

variable- speed drive

cooling tower

condenser

cooling tower

bypass pipe

diverting

 

valve

condenser

 

Figure 19

Another method of controlling the capacity of a water-cooled condenser is to vary the temperature of the water entering the condenser.

12

TRG-TRC005-EN

Page 19
Image 19
Trane trg-trc005-en manual Vary Condenser Water Flow Rate, Vary Entering Water Temperature

trg-trc005-en specifications

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