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Coal to Electricity

The process of converting coal to electricity at a thermal generating station is really a collection of separate processes which are all inter-related.

These processes typically include:

  1. coal handling
  2. boiler & steam generation
  3. ash systems
  4. turbine / generator
  5. circulating water & condenser
  6. transformers & switchyard

Coal is supplied by the mine and crushed to provide fuel for the boiler. The coal is mixed with hot air and burned in the boiler. This provides heat to boil the water and create steam. The steam is then superheated before going to the turbine.

The heavy ash from burning the coal is collected at the bottom of the boiler and returned to the mine for disposal. The lighter ash is removed from the exhaust gases and collected and sold. The remaining gases, mainly Nitrogen, Carbon Dioxide and water vapour, are exhausted up the stack (chimney).

Steam from the boiler passes through the turbine, spinning it at 3600 rpm. The steam is condensed back into water in the condenser and returned to the boiler to be re-used. The turbine turns the generator, which creates the electrical current. The electricity from the generator is passed through a transformer to raise the voltage before going out on the power lines to the customers.

Edmonton Power Historical Foundation

Hours of operation 2022

We are located on the grounds of the Leduc West Antique Museum. Travel 5 miles west of Leduc on Highway 39. Go north on Range Road 260 (Cohne Dale Road) for about a mile and the museum will be on your right. Our museum will be open for the first time post-pandemic on September 17 as the Leduc West Antique Society hosts the Lesco Pro Show 'n Shine. We will be open from 10 AM to 5 PM; on the grounds there will be food concessions, kiddie games, bouncy tents and gorgeous trucks. Admission to the site is only $2.

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