How it works

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  1. Coal is transported in GRDA’s own trains.  Upon arrival, cars are turned upside down and emptied by a rotary dumper.
  2. Coal  travels  by  conveyor  for dispersal  into  silos.  The coal is then ground  into  powder and injected into the boiler for combustion.
  3. Huge  fans  located  below the boiler provide the air for combustion
  4. Water for  the boiler comes from the Grand  River.  The water is filtered and treated to remove impurities.
  5. The  boiler  produces steam at  2,400  PSI  (pounds  per square  inch)   and   1000º Fahrenheit.  This pressurized steam  is  then  forced  over the  blades  of  the  turbine, making it spin.
  6. A  condenser  converts  this steam  back  into  water  for re-use  in  the  boiler.      The condenser consists of tubes with  cool  water.   When the steam touches  these tubes, it condenses back into water and  is  pumped to the boiler to  start  the  cycle  again.
  7. The   condenser  water is sent to the cooling  tower where its temperature is lowered so it can be reused.  The cloud-like plume coming from the cooling towers is water vapor from this cooling process.
  8. The  steam-driven turbine spins the   generator  rotor  within  a magnetic  field   at  a  constant sixty revolutions per second.  This action produces electricity at 24,000 volts.  Using electric transformers,  the electricity is stepped  up  to  345,000 volts.  High   voltage   is   used   for transmitting  power  because it reduces loss over long distances.
  9. The chimney, equipped with a  continuous  emissions monitoring system, reaches 507  feet  into  the  air.
  10. High  voltage  transmission lines  transmit electricity to distribution  sub-stations where  the power is then stepped down for use by GRDA customers.