Lecture 4

St T biSteam Turbines

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Types of Turbine

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Typical steam conditions and power generationTypical steam conditions and power generation

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Configuration of Steam Turbinesg

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Turbine Performance:General InsightsGeneral Insights

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Turbine Performance:Turbine Performance:Part Load

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How do we account for complex (extraction) turbines?(extraction) turbines?

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Summery Main types of steam turbine1. back pressure2 condensing2. condensing3. extraction (passout).

Performance can be estimated from steam properties together with turbine efficiency.

Capability diagram can be used to represent the turbine operational characteristics.

Turbine energy losses depend mostly on its size

Turbine model allows accurate prediction of steam

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Turbine performance over a range of conditions