A combined-cycle power plant uses both a gas and a steam turbine together to produce up to 50 percent more electricity from the same fuel than a traditional simple-cycle plant. The waste heat from the gas turbine is routed to the nearby steam turbine, which generates extra power.
HOW A COMBINED-CYCLE
POWER PLANT PRODUCES ELECTRICITY ?
@
1. Gas turbine burns fuel.
· The gas turbine compresses air and mixes it with fuel that is heated to a very high temperature. The hot air-fuel mixture moves through the gas turbine blades, making them spin.
· The fast-spinning turbine drives a generator that converts a portion of the spinning energy into electricity.
1. Gas turbine burns fuel.
· The gas turbine compresses air and mixes it with fuel that is heated to a very high temperature. The hot air-fuel mixture moves through the gas turbine blades, making them spin.
· The fast-spinning turbine drives a generator that converts a portion of the spinning energy into electricity.
2.
Heat recovery system captures exhaust.
·
A Heat Recovery Steam Generator (HRSG) captures exhaust heat
from the gas turbine that would otherwise escape through the exhaust stack.
·
The HRSG creates steam from the gas turbine exhaust heat and
delivers it to the steam turbine.
3.
Steam turbine delivers additional electricity.
·
The steam turbine sends its energy to the generator drive shaft,
where it is converted into additional electricity
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