a completely mixed reactor. the concentration in the reactor is the same that flows our of the reactor

The overall basic difference is the ability to obtain widely varying performance for the reactor depending on the amount of recycle sent back to the plug-flow reactor (PFR).

The equations do not lend themselves to typing. For a comprehensive overview of the subject see p.296-297 of Chemical Engineering Kinetics & Reactor Design by Charles G. Hill.

The control rods which are neutron absorbers can be raised or lowered to change the reactor power level. The temperature at the reactor outlet will be a function of both the power level of the reactor and the coolant flow rate and inlet temperature.

the currents path blocks & normal voltage will flow