Stecco, Sergio S.; Manfrida, Giampaolo - In: Energy 11 (1986) 6, pp. 573-577
The thermodynamics of compression and expansion processes in turbomachinery are examined. Rational efficiencies are defined and their relation to isentropic and polytropic efficiencies are discussed. Multistage turbines with extractions are optimized. This approach yields expressions that are...