Nuclear reactor - Wikipedia
A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion.
NUCLEAR 101: How Does a Nuclear Reactor Work?
2019年2月6日 · Nuclear reactors are the heart of a nuclear power plant. They contain and control nuclear chain reactions that produce heat through a physical process called fission. That heat is used to make steam that spins a turbine to create electricity.
World Nuclear Power Reactors 1951–2024
2024年11月30日 · The database covers commercial nuclear power reactors for which construction has or had started and does not include “planned” or “projected” power reactors. It also excludes research, heating or military reactors that do or did not generate power.
Types of nuclear reactors, characteristics and use
2012年8月29日 · Nuclear reactors are part of nuclear power plants. The purpose of a reactor is to obtain energy from nuclear energy. The most common use of this type of reactor is the production of electrical energy. In nuclear reactors fission chain reactions (splitting of uranium atoms) are generated to produce thermal energy. The rest of the nuclear power ...
Nuclear power reactors, reactor types and technologies | IAEA
2024年6月28日 · Nuclear power reactors produce energy by initiating and controlling a sustained nuclear chain reaction. Currently, over 400 such reactors in 32 countries provide about 10 per cent of the world’s electricity. The IAEA fosters an international information exchange and collaboration on technological innovations in different reactor technologies.
Nuclear reactor | Definition, History, & Components | Britannica
2024年11月16日 · nuclear reactor, any of a class of devices that can initiate and control a self-sustaining series of nuclear fissions. Nuclear reactors are used as research tools, as systems for producing radioactive isotope s, and most prominently …
Nuclear Power Reactors - World Nuclear Association
Most nuclear electricity is generated using just two kinds of reactor. New designs are coming forward and some are in oper... Improved designs of nuclear power reactors are currently being developed in several countries. Newer advanced reactors now being built have simpler designs which reduce capital cost. They are more fue...
Nuclear explained Nuclear power plants - U.S. Energy …
2023年8月21日 · Nuclear reactors are machines that contain and control nuclear chain reactions while releasing heat at a controlled rate. A nuclear power plant uses the heat that a nuclear reactor produces to turn water into steam, which then …
Power Reactors | NRC.gov
2023年10月19日 · There are currently 94 licensed to operate nuclear power plants in the United States (63 PWRs and 31 BWRs), which generate about 20% of our nation's electrical use. For more information about operating reactors, see the location map, list of power reactors, and NRC Project Managers.
Nuclear power - Wikipedia
A fission nuclear power plant is generally composed of: a nuclear reactor, in which the nuclear reactions generating heat take place; a cooling system, which removes the heat from inside the reactor; a steam turbine, which transforms the heat into mechanical energy; an electric generator, which transforms the mechanical energy into electrical ...
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