Maximum specific power output of a two-stage endoreversible combined cycle

The optimal performance of a two-stage endoreversible combined cycle is investigated for steady-state operation. The cycle efficiency at maximum specific power output equals the Curzon-Ahlborn efficiency, whereas the maximum specific power output of the cycle is, in general, smaller than that of a single-stage endoreversible cycle operating over the same temperature range. Optimization problems concerning temperatures of the working fluid and heat-transfer areas of the heat exchangers are discussed.