ANALYSIS OF REGENERATED SINGLE-SHAFT CERAMIC GAS-TURBINE ENGINES AND RESULTING FUEL ECONOMY IN A COMPACT CAR

摘要

Ranges in design and off-design operating conditions of an advanced gas turbine and their effects on fuel economy were analyzed. The assumed engine incorporated a single-stage radial-flow turbine and compressor with fixed geometry. Fuel economies were calculated over the Com¬posite Driving Cycle on a 29° C (85° F) day with gasoline as the fuel in a 1588 -kg (3500-lb) car. At a constant turbine-inlet temperature of 1644 K (2500° F), with a regenerator sized for a full-power effectiveness of 0.90, the best fuel economies ranged from 11.1 to 10.2 km/ liter (26.2 to 22.5 mpg) for full-power turbine tip-speeds of 770 to 488 m/sec (2530 to 1600 ft/sec), respectively.