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A pressurized water reactor (PWR) is a type of light-water nuclear reactor. PWRs constitute the large majority of the world's nuclear power plants (with notable exceptions being the UK, Japan, India and Canada). In a PWR, water is used both as a neutron moderator and as coolant fluid for the reactor core.
The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to heavy water, as both its coolant and neutron moderator; furthermore a solid form of fissile elements is used as fuel. Thermal-neutron reactors are the most common type of nuclear reactor, and light-water reactors are the most common type of ...
The water-water energetic reactor (WWER), [1] or VVER (from Russian: водо-водяной энергетический реактор; transliterates as vodo-vodyanoi enyergeticheskiy reaktor; water-water power reactor) is a series of pressurized water reactor designs originally developed in the Soviet Union, and now Russia, by OKB Gidropress. [2]
Water is heated through the splitting of uranium atoms in the reactor core. The water, held under high pressure to keep it from boiling, produces steam by transferring heat to a secondary source of water. The steam is used to generate electricity. Cooling water from the river condenses the steam back into water.
Original – Animated Diagram of a Pressurized Water Reactor. Reason This is an interesting animated image that shows the inner works of a pressurized water reactor like what they use in nuclear power plants. It shows how a nuclear power plant generates the electricity used to power our electric appliances and devices.
Current U.S. naval reactors are all pressurized water reactors, [4] which are identical to PWR commercial reactors producing electricity, except that: They have a high power density in a small volume and run either on low-enriched uranium (as do some French and Chinese submarines) or on highly enriched uranium (>20% U-235, current U.S ...
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Schematic diagram of a CANDU reactor: Hot and cold sides of the primary heavy-water loop; hot and cold sides of secondary light-water loop; and cool heavy water moderator in the calandria, along with partially inserted adjuster rods (as CANDU control rods are known).