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 300bar/600°C/620°C up to 378bar/ 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 common to current power plants, conditions in the high temperature region, above 600°C, will require additional research.
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