Power optimization of a finite-time Rankine heat engine

Abstract The power output of a single, finite-time Rankine heat engine is studied. The model adopted is a reversible Rankine cycle coupled to a heat source and a heat sink by heat transfer. Both the heat source and the heat sink have finite heat capacity rate. A mathematical expression is derived for the power output of the irreversible heat engine. The maximum power output is found. The maximum bound provides the basis for designing a real heat engine and for a performance comparison with existing power plants.