EVALUATION OF INTERNAL PRESSURIZATION FOR APPLICATION TO PRESSURIZED WATER REACTOR SYSTEMS

摘要

Internal pressurization has been proposed as a method of reducing the cost of power from pres¬surized water reactors. Two methods of internal pressurization are discussed and evaluated in this report.nSelf-pressurization, which involves operation with the reactor exit coolant at saturation temper¬ature, does result in decreased power costs, due mostly to the increased cycle efficiency and net electrical output associated with the higher oper¬ating temperature of the self-pressurized plant.nOther schemes, involving mechanical changes rather than changes in operating conditions, are also evaluated and shown to be marginal, offering no significant economic incentive.