Question:medium
Consider a simple gas turbine (Brayton) cycle and a gas turbine with perfect regeneration. In both the cycles, the pressure ratio is 6 and the ratio of the specific heats of the working medium is 1.4. The ratio of minimum to maximum temperatures is 0.3 (with temperatures expressed in K) in the regenerative cycle. The ratio of the thermal efficiency of the simple cycle to that of the regenerative cycle is
Consider a simple gas turbine (Brayton) cycle and a gas turbine with perfect regeneration. In both the cycles, the pressure ratio is 6 and the ratio of the specific heats of the working medium is 1.4. The ratio of minimum to maximum temperatures is 0.3 (with temperatures expressed in K) in the regenerative cycle. The ratio of the thermal efficiency of the simple cycle to that of the regenerative cycle is
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Regeneration is highly effective at lower pressure ratios.
Adding a regenerator will always increase the thermal efficiency of the gas turbine cycle compared to the simple cycle, making the ratio $\frac{\eta_{\text{simple}}}{\eta_{\text{regen}}} < 1$.
This fact immediately helps eliminate options greater than 1.0.
Adding a regenerator will always increase the thermal efficiency of the gas turbine cycle compared to the simple cycle, making the ratio $\frac{\eta_{\text{simple}}}{\eta_{\text{regen}}} < 1$.
This fact immediately helps eliminate options greater than 1.0.
Updated On: Jul 9, 2026
- 0.1859
- 0.8141
- 0.6256
- 0.3744
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The Correct Option is B
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