Publication Detail

Improvements in part-load efficiency by reducing pressure ratio in regenerative gas-turbine engines.

Theodosios P. Korakianitis (ch. Alexander), David Gordon Wilson

To obtain equal thermal efficiencies in gas-turbine engines, designers can trade compressor pressure ratio for heat-exchanger effectiveness. What has not been known up to now is the effect of design-point pressure ratio on the part-load efficiency of gas-turbine engines. The work reported here shows that, for similar turbomachinery technology, design-point and part-load efficiencies improve as the design-point pressure ratio decreases and the heat-exchanger thermal ratio increases.

type: Technical reports

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