Chapter 7
Closed-Cycle Gas Turbines in Cogeneration Plants


Heat is removed from the closed-cycle gas turbine process using pre cooler and compressor intercoolers. Depending on the number of intercoolers, the working medium enters the coolers at 80 to 150°C, where it is cooled back by water. The upper temperature range of the working medium in the coolers can be easily used for providing heating energy. Thus the coolers, seen in the direction of flow of the working medium, are first fitted with an array of heating water registers and then with a bank of cooling water elements. Many of the closed-cycle gas turbines listed here, including all those installed in Germany, were equipped in this way and were used as heating cogeneration plants.

  • 7.1 The Theory of Cogeneration with Closed—Cycle Gas Turbines
  • 7.2 Practical Processes

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