Thermodynamic analysis of the Stirling heat engine with regenerative losses and internal irreversibilities

Abstract A model of an irreversible cycle of the Stirling heat engine, using air as the working substance, has been established. Several irreversibilities due to the non-adiabatic regenerator dead volumes of hot space, cold space, and regenerator that the regenerator effective temperature is an arithmetic mean of the heater and cooler temperature. In addition, the general irreversibilities of the non-quasistatic cycle are taken into account. Numerical simulation is performed and the effects of the regenerator effectiveness and dead volumes are studied. Some fundamental optimal relations and general performance characteristic curves of the cycle are obtained. The results from this study indicate that the engine net work is affected by the cycle irreversibilities, while the heat input and engine efficiency are affected by both the regenerator effectiveness and dead volumes. It is concluded that the system operating temperature and the overall system efficiency depend on the internal irreversibility of the heat engine.

[1]  Costante Mario Invernizzi,et al.  Potential performance of real gas Stirling cycle heat pumps , 1996 .

[2]  Israel Urieli,et al.  Stirling Cycle Engine Analysis , 1983 .

[3]  Ö. Ataer,et al.  Numerical analysis of regenerators of free-piston type Stirling engines using Lagrangian formulation , 2002 .

[4]  Jincan Chen.  Minimum power input of irreversible Stirling refrigerator for given cooling rate , 1998 .

[5]  S. C. Kaushik,et al.  Finite time thermodynamic evaluation of irreversible Ericsson and Stirling heat engines , 2001 .

[6]  Halit Karabulut,et al.  Thermodynamic analysis of the V-type Stirling-cycle refrigerator , 2005 .

[7]  Michel Feidt,et al.  Optimisation thermodynamique en temps fini du moteur de Stirling endo- et exo-irréversible , 1996 .

[8]  M. M. Salah El-Din.  Second law analysis of irreversible heat engines with variable temperature heat reservoirs , 2001 .

[9]  E. D. Rogdakis,et al.  A thermodynamic study for the optimization of stable operation of free piston Stirling engines , 2004 .

[10]  Nadia Martaj,et al.  Exergetical analysis and design optimisation of the Stirling engine , 2006 .

[11]  Somchai Wongwises,et al.  A review of solar-powered Stirling engines and low temperature differential Stirling engines , 2003 .

[12]  Jincan Chen,et al.  Influence of several irreversible losses on the performance of a ferroelectric Stirling refrigeration-cycle , 2002 .

[13]  Lingen Chen,et al.  Optimum performance of irreversible stirling engine with imperfect regeneration , 1998 .

[14]  J. R. Senft,et al.  Ringbom Stirling Engines , 1993 .