Question 52Gas Turbine - 1st Asst/Chief

A) Efficiency will increase and fuel consumption will decrease. This is the correct answer. A decrease in the compressor inlet air temperature will increase the gas turbine engine's efficiency and decrease its fuel consumption. The reason is that colder inlet air has a higher density, which allows the compressor to draw in more air per revolution. This results in more air being compressed and more fuel being burned, leading to higher power output and improved thermal efficiency. With the same power output, the engine will require less fuel to operate, thereby reducing fuel consumption. The other options are incorrect because either the stated effects on efficiency and fuel consumption are the opposite of what would occur (B and D), or the inlet air temperature change would not affect these parameters at all (C).