Energy Encyclopedia

H

HTGR

Nuclear Energy

High-temperature gas-cooled reactor.

An HTGR is a graphite-moderated, helium-cooled reactor using coated-particle fuel and high coolant outlet temperatures.

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High Temperature Reactor (HTGR)

In a High Temperature Gas-cooled Reactor (HTGR), the highly enriched uranium spheres are dispersed in graphite (moderator) balls. Helium is a coolant.

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Glossary

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Graphite

Carbon moderator used in some reactors.