A discussion of the thermodynamics of interstage regeneration in the elastic fluid cycle is presented for the case of one regenerator. Results are derived for both pumped and cascaded regeneration in real (irreversible) cycles with pressure drops. It is shown that in each case an optimum extraction mass ratio and an optimum extraction temperature exist, the latter depending on the pressure ratio.
The calculation of some examples indicates that interstage regeneration is unlikely to prove financially attractive except possibly in the case of cascaded regeneration over a limited range of pressure ratios.
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References
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ChambadalP.Thermodynamique de la turbine à gaz1949 (Hermann et Cie, Paris).
