Y Y

Figure 11-5c Non-Automatic Extraction Condensing Turbine.

Figure 11-5c Non-Automatic Extraction Condensing Turbine.

The condenser can be either air- or water-cooled. In water-cooled systems, the cooling water exiting the condenser can sometimes be used for process or space heating hot water loads.

Because the unused steam energy is rejected to atmosphere and is, therefore, wasted, condensing turbines are usually designed with several stages to maximize efficiency. This design does, however, add to the cost. The auxiliary equipment required for handling and condensing the turbine exhaust also drives up capital and operating cost.

Non-condensing (back-pressure) turbines (Figure

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