Power plants – Motive fluid energized by externally applied heat – Having condition responsive control
Patent
1992-06-09
1993-03-09
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Having condition responsive control
F01K 1302
Patent
active
051917645
ABSTRACT:
Method for improving the heat rate of a steam turbine operated in a partial-arc mode includes sequential closing of control valves to establish a first arc of admission at which pressure drop on a first control stage reaches a predetermined level. Steam pressure to the turbine may then be reduced in combination with valve closing to maintain first stage pressure at or below the predetermined level. In a further method, low power operation is achieved by maintaining a constant arc of admission while simultaneously moving all open valves toward a closed position.
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Ostrager Allen M.
Westinghouse Electric Corp.
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