Science Quiz Electrical Generation Systems

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Boiler / Combustion Chamber
Uses coal, natural gas, or petroleum to heat the water.
Superheater
A series of pipes that transport water through the boiler as it changes to steam.
Superheated steam
Water changed to steam with temperatures as high as 1000 degrees F.
Turbine
Provides the source of mechanical energy for the generator.
Exhaust Steam
A lower temperature steam that has lost energy after turning the turbine.
Generator
Produces the electricity.
Transformer
Steps-up the voltage from 18,000 24,000 volts to as high as 675,000 volts.
Condenser
A series of pipes that provide surface area to cool and condense the steam.
Coolant
The water that is circulated through the condenser from a lake, river, or ocean.
Cooling Tower / Cooling Pond
Used to cool the water from the condenser.
Precipitator
Removes dust from the boiler exhaust fumes before being discharged into air.
Chimney
A tall smokestack which allows the gases to go into the atmosphere.
Lake
This provides the mechanical potential energy for the process.
Penstock
A tube bringing the water to the turbine.
Turbine
Provides mechanical kinetic energy to the generator.
Generator
Produces electricity.
Tailrace
A pipe discharging water from the turbine to the downstream.
Rotor
A rotating electrogmagnet inside the stator.
Exciter
A small generator that energizes the rotor to create an electromagnet.
Stator
A stationary loop of wires around the rotor in which electricity is produced.
Containment Structure
A large concrete building to contain accidental leaks.
Biological Shield
A thick slab of concrete that surrounds the pressure vessel to absorb radiation.
Pressure Vessel
Contains the superheated water that surrounds the core.
Core ( Fuel Rods)
Provides fission of U235 to produce heat.
Control Rods
Cadmium or boron rods that absorb neutrons to prevent an uncontrolled reaction.
Superheated water
Circulates around the core to transfer heat to the turbine steam-water system.
Heat Exchanger
Transfers heat to the water circulating in the turbine system.
Superheated Steam
Water changed to steam to turn the turbine.
Steam Turbine
Provides mechanical energy to the generator.
Exhaust steam
Lower temperature steam that has left the turbine.
Generator
Produces electricity.
Transformer
STeps up voltage to the power lines.
Condenser
Changes the exhaust steam back to water.
Coolant
Water from a river, lake, or ocean which passes through the condenser.
Cooling tower / Cooling Pond
The source for the coolant.
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