system flow diagram is shown in Figure A-5. Superheated steam would be 

 obtained from dual, full-capacity, once-through steam generators. Steam 

 would flow through a stop valve and would be controlled by a throttle valve 

 which is governor-regulated to control the turbine speed. The stop valve 

 would be closed automatically to protect against overpressure, overspeed, or 

 loss of lubrication. Exhaust steam would be condensed by an annular hull 

 condenser and recycled through a full-flow demineralizer to maintain purity 

 for the once-through steam system. Power conversion system data for the 

 preliminary design are shown in Table A-2. Figure A-6 shows the full-power 

 heat balance for the power conversion system. 



Table A-2. Data for Preliminary Power Conversion System 



General 



Electric power (net), kw 100 



Overall efficiency, % 11.4 



Thermal power, kw 880 



Steam Cycle 



Turbine inlet pressure, psia 262 



Turbine inlet temperature, °C 235 



Turbine inlet superheat, °C 10 



Turbine exhaust pressure, psia 3.3 



Turbine steam flow, Ib/hr 2,560 



Turbine steam consumption, Ib/bhp-hr . . . 15.0 



Turbine 



Speed, rpm (estimate) 13,000 



States (estimate) 4-5 



Efficiency, % 56 



Thermal efficiency, % 15.1 



Generator 



Type drive gear 



Speed, rpm 3,600 



Power, kw 115 



Voltage, volts 480 



Frequency, Hertz 60 



Phases 3 



100 



