Engine Gas Turbines (Supplementary) USCG Question #128 (Set 4)

What type of gas turbine cycle configuration is shown in the illustration? See illustration GT-0031

USCG Exam Illustration GT-0031
USCG Examination Diagram: Illustration GT-0031
Official USCG Answer & Rule Citation

Correct Answer: Option D — Intercooled-recuperated type.

The intercooled-recuperated (ICR) cycle utilizes an intercooler between compressor stages to reduce work input and a recuperator to preheat combustion air using exhaust heat. This configuration significantly improves thermal efficiency by recovering energy that would otherwise be lost through the exhaust stack.

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