Combined Cycle Condensate and Circulating Water Systems

Learning objectives

  • Describe the purpose of the Condensate System in a combined cycle plant
  • Explain the operation of a Water-Cooled Condenser
  • Explain the operation of an Air-Cooled Condenser
  • Describe the purpose of a steam jet air ejector, vacuum pump, and hogger
  • Describe the function of a deaerator
  • Describe the common deaerator arrangements used in combined cycle power plants
  • Explain the difference between a once-through and a closed-circuit circulating water system
  • Describe the purpose of a cooling tower in a combined cycle circulating water system

Course overview

Cooling water for the condenser is supplied by the circulating water supply. Large pumps and pipes supply cooling water from a nearby pond or river to the tubes in the condenser. As the turbine exhaust steam passes over the tubes, it transfers heat to the circulating water system, then returns to a cooling tower. In the cooling tower, air cools the heated circulating before returning to its source.

The Combined Cycle Condensate and Circulating Water Systems training course examines the components and major flow paths of the condensate and circulating water systems in a typical triple-pressure combined cycle plant. Understanding these components is necessary for the safe operation of a combined cycle plant. This online course focuses on:

  • Condensate system overview
  • Condensate system components
  • Circulating water system

This course is part of the Combined Cycle Power Plant Operations series.

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