KINETICS STUDY FOR CLOSED CYCLE GAS COOLED REACTOR PROGRAM

Technical Report · Sat Mar 01 04:00:00 EST 1958

OSTI ID:4302926

The transient behavior of the closed cycle, gas cooled reactor system for a 20,000 shaft horsepcwer merchant ship was investigated using a digital differential analyzer. In this cycle, the helium coolant is heated in the reactor and then passes through the high pressure turbine, a throttle valve, low pressure turbine provided with a bypass valve, the hot side of the recuperator, precooler, compressor, recuperator cold side, and back to the reactor inlet. Step function changes in reactor reactivity and heat release and independent perturbations of control elements at steady state fll load conditions establish basic trends free from interaction effects. The basic requirement of constant reactor outlet temperature was postulated for reactor power control. This parameter was held fixed and the effects of ramp function closures of the throttle valve and openings of the bypass valve were evaluated. The system power level was changed by extracting and introducing gas at both the high and low pressure legs of the system. Finally, the study presents the results of two modes of system control for maneuvering operation. The demands of this condition were met by bypassing the low pressure turbine and positioning the throttle valve by (a) a regulatory signal from the high pressure turbine shaft speed and (b) programmed interlocks on bypass valve position. (auth)

• Research Organization: Ford Instrument Co., Long Island City, N.Y.
• NSA Number: NSA-12-017764
• OSTI ID: 4302926
• Report Number(s): FICO-108
• Country of Publication: United States
• Language: English

Related Subjects

ANALOG SYSTEMS
CONTROL ELEMENTS
CONTROL SYSTEMS
COOLANT LOOPS
DIGITAL SYSTEMS
EQUATIONS
GAS COOLANT
HEAT TRANSFER
HELIUM
MONITORING
NEUTRON FLUX
PHYSICS
POWER PLANTS
PRESSURE
PROGRAMMING
PROPULSION
REACTIVITY
REACTOR CORE
REACTOR SAFETY
REACTORS
SERVOMECHANISMS
SHIPS
STABILITY
TEMPERATURE
TRANSFER FUNCTIONS
TRANSIENTS
TURBINES
VALVES
VARIATIONS