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Title: NUCLEAR SUPERHEATER FOR BOILING WATER REACTOR

A description is given of a boiling water reactor having a superheating region integral with the core. The core consists essentially of an annular boiling region surrounding an inner superheating region. Both regions contain fuel elements and are separated by a cylindrical wall, perforations being provided in the lower portion of the cylindrical wall to permit circulation of a common water moderator between the two regions. The superheater region comprises a plurality of tubular fuel assemblies through which the steam emanating from the boiling region passes to the steam outlet. Each superheater fuel assembly has an outer double-walled cylinder, the double walls being concentrically spaced and connected together at their upper ends but open at the bottom to provide for differential thermal expansion of the inner and outer walls. Gas is entrapped in the annulus between the walls which acts as an insulating space between the fissionable material inside and the moderator outside. (AEC)
Authors:
; ;
Publication Date:
OSTI Identifier:
4780942
Report Number(s):
US 3034977
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Research Org:
Originating Research Org. not identified
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; BOILING; CONFIGURATION; CYLINDERS; EXPANSION; FLUID FLOW; FUEL ELEMENTS; GASES; PATENT; PLANNING; POWER PLANTS; REACTOR CORE; REACTORS; STEAM; SUPERHEATING; TRAPS; TUBES; WATER COOLANT; WATER MODERATOR; ZONES