How big is a nuclear reactor on a submarine?

How big is a nuclear reactor on a submarine?

Reactor sizes range up to ~500 MWt (about 165 MWe) in the larger submarines and surface ships. The French Rubis-class submarines have a 48 MW reactor that needs no refueling for 30 years. The nuclear navies of the Russian Federation, the United States, and the United Kingdom rely on steam turbine propulsion.

Does a nuclear submarine work?

The propulsion plant of a nuclear-powered ship or submarine uses a nuclear reactor to generate heat. In the secondary system, the steam flows from the steam generators to drive the turbine generators, which supply the ship with electricity, and to the main propulsion turbines, which drive the propeller.

How much uranium is needed to run a submarine?

It would take about 0.7 kg of uranium to cross the atlantic on a steady course and speed, but due to tidal differences, allowanaces must be made for acceleration and change in depth, as there are greater forces acting on the sub at different depths. So in realtiy it would take about 0.9 kg on a typical British Sub.

How long would nuclear powered submarines stay underwater?

The limits on how long they can stay underwater are food and supplies. Submarines generally stock a 90-day supply of food, so they can spend three months underwater.

What does a nuclear reactor use to make heat?

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.

How does nuclear reactor work to produce electricity?

Just as conventional thermal power stations generate electricity by harnessing the thermal energy released from burning fossil fuels, nuclear reactors convert the energy released by controlled nuclear fission into thermal energy for further conversion to mechanical or electrical forms.

How is gas used in a nuclear reactor?

[3, 4] Gas-cooled reactors have been built, in which gas (carbon dioxide or helium) is used as the coolant , enabling higher coolant outlet temperatures (up to about 850°C) for use in a Brayton cycle. The nuclear reactor cooled by gas at high temperature is a new evolution of the gas-cooled nuclear reactors.

How is energy produced in a nuclear reactor?

A nuclear reactor generates electricity by splitting atoms in a process called fission. When an atom splits, energy is released along with neutrons that strike other atoms, causing them to release more neutrons and energy. The reactor uses the energy’s heat to warm water that produces steam.