The very high temperature reactor (VHTR), or high temperature gas-cooled reactor (HTGR), is a Generation IV reactor concept that uses a graphite-moderated nuclear reactor with a once-through uranium fuel cycle. The VHTR is a type of high temperature reactor (HTR) that can conceptually have an outlet temperature of 1000°C. The reactor core can be either a “prismatic block” or a "pebble-bed" core. The high temperatures enable applications such as process heat or hydrogen production via the thermochemical sulfur-iodine cycle.
Read more about Very High Temperature Reactor: Overview, History, Safety Features and Other Benefits
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“Our domestic problems are for the most part economic. We have our enormous debt to pay, and we are paying it. We have the high cost of government to diminish, and we are diminishing it. We have a heavy burden of taxation to reduce, and we are reducing it. But while remarkable progress has been made in these directions, the work is yet far from accomplished.”
—Calvin Coolidge (1872–1933)
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—Henry David Thoreau (1817–1862)