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Name: _______________ Date: _______________ Coal-Fired Power Plant 3. 4. 1. 5. 2. Coal-fired units produce electricity by burning coal in a boiler to heat water to produce steam. The steam, at tremendous pressure, flows into a turbine, which spins a generator to produce electricity. The steam is cooled, condensed back into water, and returned to the boiler to start the process over. The coal-fired boilers usually heat water to about 1,000 degrees Fahrenheit (540 degrees Celsius) to create steam. The steam is piped to the turbines at pressures of more than 1,800 pounds per square inch (130 kilograms per square centimeter). The turbines are connected to the generators and spin them at 3600 revolutions per minute to make alternating current electricity at 20,000 volts. River water is pumped through tubes in a condenser to cool and condense the steam coming out of the turbines. Some power plants generate about 10 billion kilowatt-hours a year, or enough electricity to supply 700,000 homes. To meet this demand, they burn about 14,000 tons of coal a day, an amount that would fill 140 railroad cars. Fossil Fuels Coal What is it made out of? Where in the world is it found? How is it extracted? How is it transported? What is it used for? What impacts does it have on the environment? How can its environmental impact be reduced? How much longer do we have until it runs out? Oil Natural Gas