Performance Evaluation of LOFT Steam Generator and Air Cooled Condenser During the Power Range Test

摘要

Performance of the steam generator and air cooled condenser during the Power Range Test series was evaluated and compared with expected performance. The steam generator operated as expected. Dynamic density wave instability in the steam generator is not indicated by the experimental data at 50 MW. Detailed performance analyses of the air cooled condensers were not possible because of the lack of experimental data. The air cooled condensers performed as intended; however, the maximum heat rejection capability was less than expected. The decreased heat rejection capability is probably a result of decreased air flow rate. Full power (50 MW) with 3 air cooled condenser bays operating may be possible only to 70 to 75 exp 0 F ambient air temperature. Increasing the maximum heat rejection of the air cooled condensers requires increasing the air flow rate by decreasing frictional pressure losses and or increasing the air flow rate capability of the motor driven propeller fans. Sufficient experimental data are not available to permit detailed performance analyses of the majority of the components and systems contained within the Secondary Coolant System. (ERA citation 06:000793)