Jincan Chen 1998 J. Phys. A: Math. Gen. 31 3383 doi:10.1088/0305-4470/31/15/005
Jincan Chen
Show affiliationsA universal model of an n-stage combined Carnot cycle system is established. Several major irreversibilities which often exist in real thermodynamic cycles, such as finite-rate heat transfer in the heat-exchange processes, heat leak losses of the heat source, and internal dissipation of the working fluid, are included in the model so that many models of irreversible and endoreversible Carnot cycles which appear in the literature can be regarded as special cases of the universal cycle model. The efficiency, power output and rate of heat input are optimized. Some characteristic curves of the cycle system are presented. Some important performance bounds are given. The optimal combined conditions between two adjacent cycles in the combined cycle system are determined. The optimal performance of an arbitrary-stage irreversible, endoreversible, and reversible combined Carnot cycle system can be directly derived for specific choices of some parameters. The results obtained here are of general significance for both physics and engineering.
05.70.Ln Nonequilibrium and irreversible thermodynamics
82C35 Irreversible thermodynamics, including Onsager-Machlup theory
Issue 15 (17 April 1998)
Received 3 June 1997
Jincan Chen 1998 J. Phys. A: Math. Gen. 31 3383
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