Abstract: In a steam turbine plant having a vacuum pumping configuration which has a jet pump and a liquid ring pump disposed in series one after the other, steam collecting in the plant, preferably mixed with air, is used as a motive fluid for the jet pump. As a result, the downstream liquid ring pump can be dimensioned so as to be comparatively small. The vacuum pumping configuration is preferably configured as a central vacuum pumping system for the steam turbine plant and serves to deaerate a multiplicity of plant components.

Abstract: A condenser for the water-steam loop of a power plant includes a condensate-filled lower portion. A heating pipe system is disposed in the lower portion and nozzles are disposed on the heating pipe system through which heating condensate or heating steam is forced into the condensate for heating the condensate and thereby expelling dissolved gases from the condensate. A heating valve is connected to the heating pipe system and a proportional regulator is connected to the heating valve for adjusting heating output of the heating pipe system through the quantity of hot condensate or hot steam. A measurement variable converter connected to the proportional regulator acts upon the proportional regulator at least as a function of oxygen content of the condensate and as a function of subcooling of the condensate, the subcooling being equal to the difference between the temperature of the condensate and the temperature of condensation of steam to be condensed.