Abstract: A method of operating a water/steam cycle of a thermal power station, for example a steam power station, combined heat and power station or combined cycle power station, having a preheating section for condensate, a steam generator, a steam turbine with a condenser, a condensate treatment system downstream of the condenser, and at least one condensate pump upstream of the condensate treatment system. The treated condensate is subjected to tapped steam from the steam turbine and/or from a steam reheat system in the preheating section and is heated thereby before it is supplied to the steam generator. The condensate is subjected to a pretreatment before reaching the preheating section and its degasification is dispensed with when it subsequently flows through the preheating section. A water/steam cycle of a thermal power station includes a preheating section, a steam generator, a steam turbine downstream of the steam generator, a condenser and a condensate treatment system downstream of the condenser.

Abstract: An apparatus for introducing feed water into a steam generator, preferably into a waste-heat boiler of a combined-cycle power station having at least one waste-heat boiler, includes at least one feed-water container and a high-pressure system and a low-pressure system to be fed from the at least one feed-water container. The high-pressure and low-pressure systems each have respective feed-water pump lines, pumps connected in the feed-water pump lines, and an electrical drive motor. Each of the drive motors drive one of the pumps for the low-pressure system and one of the pumps for the high-pressure system in common.