Intertube thermal conductance rate limiting device

Details Intertube thermal conductance rate limiting device Intertube thermal conductance rate limiting device

1991-09-24

1992-12-15

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

G21C 306

Patent

active

051715210

ABSTRACT:
The invention provides an intertube thermal conductance rate limiting device for a nuclear reactor fuel channel having an inner pressure tube and outer calandria tube. The device comprises a wire screen placed in the annular region between the pressure tube and calandria tube which limits the contact area between the two tubes. By reducing the contact area, the screen limits the thermal conductance rate to the calandria tube. This reduces or eliminates the potential for film boiling or "dryout" of the calandria tube.

REFERENCES:
patent: 3280003 (1966-10-01), Alfille et al.
patent: 3944468 (1976-03-01), Duret et al.
patent: 4005521 (1977-02-01), Kaplan et al.
patent: 4038138 (1977-07-01), Linning et al.
patent: 4654193 (1987-03-01), Amano et al.

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