Method and apparatus for reducing parasitic bypass flow in a boi

Details Method and apparatus for reducing parasitic bypass flow in a boi Method and apparatus for reducing parasitic bypass flow in a boi

1991-10-21

1992-11-17

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By coolant flow

376373, G21C 1500

Patent

active

051641500

ABSTRACT:
A method and apparatus for improving the operating efficiency of a boiling water reactor is disclosed. Instead of coolant water being injected simultaneously at the bottom of the fuel rod assemblies and core bypass regions, the two flows then proceeding in parallel to the top of the reactor, the top of the bypass regions is sealed off and bypass coolant water is directed at the bottom of the sealing cover. This forces the bypass coolant water to flow down through the bypass regions. At the bottom of the bypass regions, provision is made to allow the bypass water to flow into the bottom of the fuel rod assemblies where it is entrained by the fuel rod coolant water flow. By converting flow through the core bypass region into a single series flow, increased operating efficiency is achieved.

REFERENCES:
patent: 5023047 (1991-06-01), Nishida et al.

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