Coupled natural-circulation loops

Figure 16.4 Two vertical coupled natural-circulation loops.

The vapor flow rates and temperatures in the hot legs are strongly coupled with the steam generator tube flow rates and the steam generator inlet plenum mixing. However, the hot leg and steam generator natural circulation loops are weakly coupled with the core and upper plenum flow... [Pg.482]

For the single-phase case, the natural circulation flowrate is found by integration of the loop momentum equation and coupling this to the energy equation. Thus, the primary temperature increase is given by the standard result. [Pg.59]