The high-temperature engineering test reactor (HTTR) is a graphite-
moderated gas-cooled
research reactor in
ÅŒarai, Ibaraki, Japan operated by the
Japan Atomic Energy Agency. It uses long hexagonal fuel assemblies, unlike the competing
pebble bed reactor designs.
HTTR first reached its full design power of 30 MW (thermal) in 1999. Other tests have shown that the core can reach temperatures sufficient for
hydrogen production
Hydrogen gas is produced by several industrial methods. Nearly all of the world's current supply of hydrogen is created from fossil fuels. Article in press. Most hydrogen is ''gray hydrogen'' made through steam methane reforming. In this process, ...
via the
sulfur-iodine cycle.
Technical details
The primary coolant is helium gas at a pressure of about , the inlet temperature of , and the outlet temperature of . The fuel is uranium oxide (
enriched to an average of about 6%).
See also
*
Very-high-temperature reactor
*
Hydrogen economy
References
External links
HTTRat the
JAEA website.
Graphite moderated reactors
Nuclear technology in Japan
ÅŒarai, Ibaraki
{{nuclear-power-stub