A PWR is operating at a steady state condition. We now shutdown the plant and want to estimate the..

A PWR is operating at a steady state condition. We now
shutdown the plant and want to estimate the natural circulation flow rate.
Although the reactor power decays after shutdown, we assume the core power
remains steady for the duration of interest. Find the natural circulation flow
rate 48 hours after shutdown. Data: Nominal reactor power: 3000 MWth, reactor
pressure: 2265 psia, TC = 550 F, TH = 610
F, _R = 0.28 ft-4.