Relationship between generator capacity and boiler capacity

   From the energy point of view, the power generation process of the power plant is essentially a process of energy conversion (chemical energy → thermal energy → kinetic energy → electrical energy).jKFHorizontal boiler

  Electricity is produced at a an electric power plant. Some fuel source, such as biomass fuel, coal, oil, natural gas, or biogas produces heat. The heat is used to boil water to create steam. The steam under high pressure is used to spin a turbine. The spinning turbine interacts with a system of magnets to produce electricity. Almost all of power plants operate by heating water in a boiler unit into super heated steam at very high pressures.jKFHorizontal boiler

Relationship between generator capacity and boiler capacityjKFHorizontal boiler

  The steam generated by the boiler is generally measured in tonnage, but the steam turbine power generation is calculated by heat, and the two can be converted: generator electric power MW = boiler tonnage × steam per ton × steam turbine efficiency × generator efficiency. The steam enthalpy depends on the parameters of the steam. The pressure and temperature of the steam are different, and the enthalpy value is also different. It is generally considered to be 0.7. The coefficient of steam turbine efficiency and generator efficiency depends on the power station unit system.jKFHorizontal boiler

  The corresponding relationship between the power generation capacity MW and the boiler capacity of tonnage is as follows.jKFHorizontal boiler

  1. Medium pressure boiler; boiler evaporation: 75t/h; main steam parameter 3.82MPa/450°C. Supporting steam turbine generator set capacity 12MWjKFHorizontal boiler

  2. Medium pressure boiler; boiler evaporation: 130t/h; main steam parameter 3.82MPa/450°C. Supporting steam turbine generator set capacity 25MWjKFHorizontal boiler

  3. High-pressure boiler; boiler evaporation: 220t/h; main steam parameter 5.4MPa/540°C. Supporting steam turbine generator set capacity 50MWjKFHorizontal boiler

  4. High-pressure boiler; boiler evaporation: 260t/h; main steam parameter 5.4MPa/540°C. Supporting steam turbine generator set capacity 60MWjKFHorizontal boiler

  5. High-pressure boiler; boiler evaporation: 410t/h; main steam parameter 5.4MPa/540°C. Supporting steam turbine generator set capacity 100MWjKFHorizontal boiler

  6. Ultra-high pressure boiler; boiler evaporation: 440t/h; main steam parameter 13.7MPa/540°C. Supporting steam turbine generator set capacity 135MWjKFHorizontal boiler

  7. Subcritical boiler; boiler evaporation: 1025t/h; main steam parameter 14.7MPa/540°C. Supporting steam turbine generator set capacity 300MWjKFHorizontal boiler

  8. Supercritical boiler; boiler evaporation: 1900t/h; main steam parameter 26.2MPa/566°C. Supporting steam turbine generator set capacity 600MWjKFHorizontal boiler

  9. Supercritical boiler; boiler evaporation: 3000t/h; main steam parameter 26.2MPa/605°C. Supporting steam turbine generator set capacity 1000MWjKFHorizontal boiler

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