Calculation of the Choked Back Pressure for Steam Turbines with Air Cooled Condensers

Haisheng Yang, Shuping Chang, Ruitao Wu

Thermal Technology Department, Hebei Electric Power Research Institute, Shijiazhuang, Hebei PRC.

DOI: 10.4236/epe.2013.54B279                

Abstract

The choked back pressure characteristic of the steam turbine unit with air cooled condenser is very different with the unit with wet cooling technology, and the understanding of the choked back pressure performance change with operation load is important to guide the economic operation of the unit. One simplified Variable Operation Condition Analysis Method was put forward for calculation of the unit output-turbine back pressure characteristics. Based on this method, the choked back pressure for each operation load can be determined. An example was given for a super-critical, regenerative single-shaft, 2-casing with 2-exhaust steam turbine generation unit with air cooled condenser. The calculation result was provided and compared with the result of the unit with wet cooling technology.

Keywords

Air Cooled Condenser; Steam Turbine; Choked Back Pressure Characteristic; Calculation

Conflicts of Interest

The authors declare no conflicts of interest.

References

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