increases thermal efficiency
allows high compression ratio
decreases heat loss is exhaust
allows operation at very high altitudes
3.5 : 1
5:1
8:1
12:1
high thermal efficiency
reduction in compressor work
decrease of heat loss in exhaust
maximum work output
increase temperature
reduce turbine size
increase power output
increase speed
(a) increase of work ratio
(b) decrease of thermal efficiency
(c) decrease of work ratio
both (a) and (b) above