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Gas-based power plant is similar to a steam turbine power plant, with the only difference that, here, we use compressed high-pressure air to rotate the turbine. The schematic diagram of a typical gas turbine power plant is shown in Figure 2.3. It has three major parts:

1 Compressor

2 Combustor

3 Turbine

The air or natural gas is compressed in the compressor. The compressed air then passes through the combustor where the air is combusted to high temperature and high pressure. This high-pressure air is used to run the turbine, which, in turn, rotates the alternator to produce electricity. This is a simple cycle gas plant. In a combined cycle gas plant, the heat produced from combustion is used for industrial purposes through a heat recovery steam generator [6, 7].

Figure 2.3 A typical gas turbine power plant.