Passive decay heat removal and internal depressurization system

Details Passive decay heat removal and internal depressurization system Passive decay heat removal and internal depressurization system

1993-10-12

1995-03-14

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Auxiliary heat removal structure

376407, 60646, G21C 1518

Patent

active

053982673

ABSTRACT:
A jet condenser injects steam from a steam generator into a mixing tube, where it combines with coolant water from a heat exchanger. The steam completely condenses Upon mixing with the water because the ratio of the mass flow rate of water to that of steam is relatively high at any given combination of temperatures and pressures. The mixture of coolant water and condensate then enters a divergent tube. This action enhances dynamic natural convection in the condenser loop, which provides the forces that move the water through the loop. A small portion of the water is returned to the steam generator; the remainder is diverted to the heat exchanger. The mass flow of the steam in the jet condenser is equal to that of the condensate returned to the steam generator, thereby maintaining a constant coolant water inventory. During an accident, radioactive fission products would be retained within the closed jet condenser loop.

REFERENCES:
patent: 4149557 (1979-04-01), Keech et al.
patent: 4280796 (1981-07-01), Reinsch
patent: 4444246 (1984-04-01), Reinsch
patent: 4623091 (1986-11-01), Stein
patent: 4687626 (1987-08-01), Tong
patent: 5082619 (1992-01-01), Sawyer

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