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Improving thermal cycle efficiency in advanced power plants: water and steam chemistry and materials performance

B. Dooley,     Structural Integrity Associates, Inc USA

R. Svoboda,     Svoboda Consulting, Switzerland

Abstract:

The fundamental need for improved cycle efficiency of steam power plants will require an increase in steam temperatures and pressures from today’s upper end of about 300 bar/600 °C/620 °C up to 378 bar/ 732 °C/760 °C. These plants will be equipped with once-through boilers running under stringent water/steam purity requirements, with oxidizing all-volatile treatment (AVT(O)) or oxygenated treatment (OT), condensate polishers and no copper alloys in the system. While the conditions in the lower temperature end are ...

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