# Nuclear power station

The main nuclear fuels are uranium and plutonium. In a nuclear power station nuclear fuel undergoes a controlled chain reaction in the reactor to produce heat - nuclear to heat energy.

• Heat is used to change water into steam in the heat exchanger.
• The steam drives the turbine (heat to kinetic energy).
• This drives the generator to produce electricity - kinetic to electrical energy.

Cross-section of a nuclear reactor

Unlike fossil fuels, nuclear fuels do not produce carbon dioxide or sulphur dioxide. $$1 kg$$ of nuclear fuel produces millions of times more energy than $$1 kg$$ of coal.