Method of varying turbine output of a supercritical-pressure ste

Details Method of varying turbine output of a supercritical-pressure ste Method of varying turbine output of a supercritical-pressure ste

1980-02-01

1982-07-13

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

60467, F01K 300

Patent

active

043387896

ABSTRACT:
A method of varying turbine output from approximately 85% rated load down to approximately 65% rated output or alternatively from 100% down to approximately 85% where the turbine forms part of a supercritical installation having a steam generator for generating steam to a predetermined amount in excess of critical pressure. The installation includes a feed water pump or maintaining pressures in the steam generator to the predetermined amount in excess of critical pressure, a division valve and a turbine control valve. Output is varied by maintaining the control valve in a fully or partially open position, the division valve in a fully open position and varying the delivery pressure of the feed water pump from the predetermined supercritical pressure to a pressure slightly above critical.

REFERENCES:
patent: 3262431 (1966-07-01), Hanzalek
patent: 4241585 (1980-12-01), Gorzegno

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