Water rod concept without loss in active flow

Details Water rod concept without loss in active flow Water rod concept without loss in active flow

1993-01-08

1993-10-05

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376352, 376373, G21C 3322

Patent

active

052512460

ABSTRACT:
A water rod is disclosed in combination with a fuel bundle for a boiling water nuclear reactor in which water is introduced to the water rod directly from the high pressure lower plenum below the reactor core. This introduced water circulates upwardly and centrally through the water rod to the top of the water rod. Thereafter, the water flows peripherally downward adjacent the exterior of the water rod. The introduction of water to the water rod directly from the high pressure water plenum below the reactor core provides sufficient pressure to maintain water flow through the water rod and to prevent flashing of the water passing through the circuitous path of the water rod to steam. Thereafter, the water is discharged at the bottom of the fuel bundle with water entering the steam generation path through the lower tie plate so that the discharged water participates in the steam generating flow path within the fuel bundle. Shunting of the water flow with the accompanying thermal hydraulic inefficiencies is avoided.

REFERENCES:
patent: 4708846 (1987-11-01), Patterson et al.
patent: 4803044 (1989-02-01), Patterson
patent: 4826653 (1989-05-01), Nylund et al.
patent: 5023047 (1991-06-01), Nishida et al.

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