Nuclear fuel assembly with multi-pitch wire wrap

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United States of America Patent

PATENT NO 11725411
SERIAL NO

17160047

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Abstract

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A nuclear fuel assembly is constructed with fuel assembly components that are wire wrapped and positioned in hexagonal rings within a fuel assembly duct. The fuel assembly components positioned in an outermost ring of the fuel assembly are wire wrapped with a pitch that is shorter than fuel assembly components positioned at an interior ring of the fuel assembly. The shorter pitch at the outer ring of the fuel assembly increases pressure drop of a coolant fluid at the edge and corner subchannels and thereby reduces the temperature gradient across the fuel assembly, which provides a higher output temperature of the nuclear reactor without substantially increasing peak temperature of the fuel cladding.

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Patent Owner(s)

Patent OwnerAddress
TERRAPOWER LLC15800 NORTHUP WAY BELLEVUE WA 98008

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnson, Brian C Issaquah, US 19 401

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