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Open-cycle vs. closed-cycle gas turbines: cycle identity. Statement to evaluate: An open-cycle gas turbine works on the same thermodynamic cycle as a closed-cycle gas turbine (working-fluid handling differs, but the ideal cycle is identical). Choose whether you agree with the statement.

Difficulty: Easy

Agree
Disagree
True only at low pressure ratios
True only with intercooling and reheat

Correct Answer: Agree

Explanation:

Concept/Approach
Both open and closed gas turbines ideally follow the Brayton (Joule) cycle: isentropic compression, constant-pressure heat addition, isentropic expansion, and constant-pressure heat rejection. The difference lies in whether the working fluid is exhausted (open) or recirculated via a cooler (closed).

Open-cycle vs. closed-cycle gas turbines: cycle identity. Statement to evaluate: An open-cycle gas turbine works on the same thermodynamic cycle as a closed-cycle gas turbine (working-fluid handling differs, but the ideal cycle is identical). Choose whether you agree with the statement.

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