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How does a pressure reactor work?
The core inside the reactor vessel creates heat. Pressurized water in the primary coolant loop carries the heat to the steam generator. The steamline directs the steam to the main turbine, causing it to turn the turbine generator, which produces electricity.
How does boiling water reactor work?
A boiling water reactor uses demineralized water as a coolant and neutron moderator. Heat is produced by nuclear fission in the reactor core, and this causes the cooling water to boil, producing steam. This water is then returned to the reactor core, completing the loop.
What is the basic difference in pressurized water reactor and boiled water reactor?
PWR has comparatively low thermal efficiency owing to two different loops. BWR offers higher thermal efficiency. In PWR, the control rods are inserted from the top of the nuclear reactor. In BWR, the control rods are inserted from the bottom of the nuclear reactor.
Does a pressurized water reactor use fission?
Pressurized water reactors The water in the core is heated by nuclear fission and then pumped into tubes inside a heat exchanger. The core water cycles back to the reactor to be reheated and the process is repeated.
Why steam Cannot be generated directly in the Pressurised water reactor?
In the BWR and LGR (RBMK) steam is generated directly within the core of the reactor whereas in all other reactors steam is generated in a separate steam circuit. Generating steam directly requires that the coolant be light water so this is only possible with certain types of reactors.
Who invented the pressurized water reactor?
Nikolay Dollezhal
Pressurized water reactor/Inventors
How does a pressurized water reactor get cooled?
In a PWR, the primary coolant (water) is pumped under high pressure to the reactor core where it is heated by the energy released by the fission of atoms. The heated, high pressure water then flows to a steam generator, where it transfers its thermal energy to lower pressure water of a secondary system where steam is generated.
How does a pressurized water nuclear reactor work?
A pressurized water reactor uses a nuclear reaction to heat water. It then transfers that heat to a steam generator to drive an electric turbine. These reactors use two completely separate water loops to ensure no radioactive water or steam escapes the system.
Why is heavy water used in a nuclear reactor?
Heavy water is basically used as a moderator in nuclear reactors to slow down the neutrons so that they are captured and become effective to bring about the fission reaction. The main reason why heavy water is used as a moderator is because it captures less neutrons than the normal water.
What is the abbreviation for pressurized water reactor?
Pressurized Water Reactor The pressurized water reactor (PWR) also uses ordinary or light water as both coolant and moderator (Figure 17.2). However, in the PWR system the cooling water is kept under pressure so that it cannot boil.