Question 100Gas Turbine - Assistant Engineer70% to pass
Why is the cycle efficiency higher in the intercooled-recuperated cycle as compared to a simple cycle gas turbine? Illustration GT-0031
AI Explanation
The correct answer is C.
The intercooled-recuperated cycle has higher cycle efficiency compared to a simple cycle gas turbine because:
1) The intercooler serves to reduce the required high-pressure compressor power by cooling the air between the low-pressure and high-pressure compressor stages. This reduces the work input required for compression.
2) The recuperator utilizes the waste heat from the turbine exhaust to preheat the air before it enters the combustor. This reduces the required fuel input to achieve the desired turbine inlet temperature, improving the overall cycle efficiency.
The other options are incorrect because they do not accurately describe the effects of the intercooler and recuperator on the cycle performance. Specifically, the intercooler does not increase the compressor power, and the recuperator does not decrease the turbine inlet temperature.
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