Induced nuclear reactions: processes – systems – and elements – With control of reactor – By coolant flow
Patent
1991-05-14
1992-01-07
Behrend, Harvey E.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By coolant flow
376241, 376371, 376377, 376379, G21C 732, G21C 108
Patent
active
050789538
ABSTRACT:
A natural circulation boiling-water reactor system using free-surface steam separation incorporates a steam separator near the inner wall of its reaction vessel and extending into a downcomer. Steam so collected supplements the main steam flow from the reactor vessel to drive a turbine, which in turn drives a generator. A flow controller opens and closes a valve to adjust the flow of steam from the steam collector to the turbine. The flow controller can be programmed to implement a predetermined power output level or to adjust power output as a function of load or time. When this level is exceeded, as indicated by feedback from the generator, the flow controller valve is constricted. The auxiliary steam flow to the turbine is directly decreased, reducing power output. Concomitantly, less steam is removed from the steam collector, and thus from the downcomer. As a result there is more carryunder steam, which reduces the power generated at the reactor core. Conversely, power output can be increased by opening the flow controller valve. Thus, ongoing power regulation is provided for a natural circulation boiling-water reactor system.
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Behrend Harvey E.
General Electric Company
Schroeder Robert R.
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