FINITE TIME THERMODYNAMIC MODELING AND ANALYSIS FOR AN IRREVERSIBLE ATKINSON CYCLE

Abstract

Performance of an air-standard Atkinson cycle is analyzed by using finite-time thermodynamics. The irreversible cycle model which is more close to practice is founded. In this model, the non-linear relation between the specific heats of working fluid and its temperature, the friction loss computed according to the mean velocity of the piston, the internal irreversibility described by using the compression and expansion efficiencies, and heat transfer loss are considered. The relations between the power output and the compression ratio, between the thermal efficiency and the compression ratio, as well as the optimal relation between power output and the efficiency of the cycle are derived by detailed numerical examples. Moreover, the effects of internal irreversibility, heat transfer loss and friction loss on the cycle performance are analyzed. The results obtained in this paper may provide guidelines for the design of practical internal combustion engines.

Keywords

Dates

  • Submission Date2009-01-28
  • Revision Date2009-04-14
  • Acceptance Date2009-04-30

DOI Reference

10.2298/TSCI090128034G

References

  1. Andresen, B., Salamon, P., Berry, R. S., Thermodynamics in Finite Time, Phys. Today, 37 (1984), 9, pp. 62-70
  2. Sieniutycz, S., Salamon, P., Advances in Thermodynamics, Vol. 4, 1990, Finite Time Thermodynamics and Thermoeconomics, Taylor & Francis, New York, USA
  3. Radcenco, V., Generalized Thermodynamics, Editura Techica, Bucharest, 1994
  4. Bejan, A., Entropy Generation Minimization: The New Thermodynamics of Finite-Size Device and Finite-Time Processes, J. Appl. Phys., 79 (1996), 3, pp. 1191-1218
  5. Hoffmann, K. H., Burzler, J. M., Schubert S., Endoreversible Thermodynamics, J. Non-Equilib. Thermodyn., 22 (1997), 4, pp. 311-355
  6. Berry, R. S., et al., Thermodynamic Optimization of Finite Time Processes, John Wiley and Sons, Chichester, UK, 1999
  7. Chen, L., Wu, C., Sun, F., Finite Time Thermodynamic Optimization or Entropy Generation Minimization of Energy Systems, J. Non-Equilib. Thermodyn., 24 (1999), 4, pp. 327-359
  8. Chen, L., Sun, F., Advances in Finite Time Thermodynamics: Analysis and Optimization, Nova Science Publishers, New York, USA, 2004
  9. Radcenco, V., et al., New Approach to Thermal Power Plants Operation Regimes Maximum Power versus Maximum Efficiency, Int. J. Thermal Sciences, 46 (2007), 12, pp. 1259-1266
  10. Feidt, M., Optimal Use of Energy Systems and Processes, Int. J. Exergy, 5 (2008), 5/6, pp. 500- 531
  11. Chen, L., et al., Efficiency of an Atkinson Engine at Maximum Power Density, Energy Convers. Mgnt., 39 (1998), 3/4, pp. 337-341
  12. Qin, X., Chen, L., Sun, F., The Universal Power and Efficiency Characteristics for Irreversible Reciprocating Heat Engine Cycles, Eur. J. Phys., 24 (2003), 4, pp. 359-366
  13. Ge, Y., et al., Reciprocating Heat-Engine Cycles, Appl. Energy, 81 (2005), 4, pp. 397-408
  14. Ge, Y., et al., Performance of an Endoreversible Atkinson Cycle, J. Energy Institute, 80 (2007), 1, pp. 52-54
  15. Ge, Y., et al., Performance of Atkinson Cycle with Heat Transfer, Friction and Variable Specific Heats of Working Fluid, Appl. Energy, 83 (2006), 11, pp. 1210-1221
  16. Wang, P., Hou, S., Performance Analysis and Comparison of an Atkinson Cycle Coupled to Variable Temperature Heat Reservoirs under Maximum Power and Maximum Power Density Conditions, Energy Convers. Mgnt., 46 (2005), 15-16, pp. 2637-2655
  17. Zhao, Y., Chen, J., Performance Analysis and Parametric Optimum Criteria of an Irreversible Atkinson Heat-Engine, Appl. Energy, 83 (2006), 8, pp. 789-800
  18. Hou, S., Comparison of Performances of Air Standard Atkinson and Otto Cycles with Heat Transfer Considerations, Energy Convers. Mgnt., 48 (2007), 5, pp. 1683-1690
  19. Lin, J., Hou, S., Influence of Heat Loss on the Performance of an Air-Standard Atkinson Cycle, Appl. Energy, 84 (2007), 9, pp. 904-920
  20. Al-Sarkhi, A., et al., Efficiency of Atkinson Engine at Maximum Power Density Using Temperature Dependent Specific Heats, Jordan J. Mech. Industrial Engineering, 2 (2008), 2, pp. 71-75
  21. Abu-Nada, E., et al., Thermodynamic Modeling of Spark-Ignition Engine: Effect of Temperature Dependent Specific Heats, Int. Comm. Heat Mass Transfer, 32 (2005), 8, pp. 1045-1056
  22. Al-Sarkhi, A., et al., Performance Evaluation of Irreversible Miller Engine under Various Specific Heat Models, Int. Comm. Heat Mass Transfer, 34 (2007), 7, pp. 897-906
  23. Parlak, A., Sahin, B., Performance Optimization of Reciprocating Heat Engine Cycles with Internal Irreversibility, J. Energy Institute, 79 (2006), 4, pp. 241-245
  24. Zhao, Y., et al., Performance Analysis and Parametric Optimum Design of an Irreversible Diesel Heat Engine, Energy Convers. Mgnt., 47 (2006), 18-19, pp. 3383-3392
  25. Zhao, Y., Chen, J., An Irreversible Heat Engine Model Including Three Typical Thermodynamic Cycles and the Optimum Performance Analysis, Int. J. Thermal Science, 46 (2007), 6, pp. 605-613
  26. Zhao, Y., Chen, J., Performance Analysis of an Irreversible Miller Heat Engine and Its Optimal Criteria, Appl. Thermal Engng., 27 (2007), 11-12, pp. 2051-2058
  27. Zhao, Y., Lin, B., Chen, J., Optimum Criteria on the Important Parameters of an Irreversible Otto Heat Engine with the Temperature-Dependent Heat Capacities of the Working Fluid, ASME Trans. J. Energy Res. Tech., 129 (2007), 4, pp. 348-354
  28. Zhao, Y., Chen, J., Optimum Performance Analysis of an Irreversible Diesel Heat Engine Affected by Variable Heat Capacities of Working Fluid, Energy Convers. Mgnt., 48 (2007), 9, pp. 2595-2603
  29. Ge, Y., Chen, L., Sun, F., Finite Time Thermodynamic Modeling and Analysis for an Irreversible Diesel Cycle, Proceedings, IMechE, Part D: J. Automobile Engineering, 222 (2008), D5, pp. 887-894
  30. Ge, Y., Chen, L., Sun, F., Finite Time Thermodynamic Modeling and Analysis of an Irreversible Otto Cycle, Appl. Energy, 85 (2008), 7, pp. 618-624
  31. Chen, L., et al., Effects of Heat Transfer, Friction and Variable Specific Heats of Working Fluid on Performance of an Irreversible Dual Cycle, Energy Convers. Mgnt., 47 (2006), 18-19, pp. 3224-3234
  32. Ge, Y., et al., Thermodynamic Simulation of Performance of an Otto Cycle with Heat Transfer and Variable Specific Heats of Working Fluid, Int. J. Thermal Science, 44 (2005), 5, pp. 506-511
  33. Ge, Y., et al., The effects of Variable Specific Heats of Working Fluid on the Performance of an Irreversible Otto Cycle, Int. J. Exergy, 2 (2005), 3, pp. 274-283
  34. Ge, Y., et al., Performance of an Endoreversible Diesel Cycle with Variable Specific Heats of Working Fluid, Int. J. Ambient Energy, 29 (2008), 3, pp.127-136
  35. Ge, Y., et al., Performance of Diesel Cycle with Heat Transfer, Friction and Variable Specific Heats of Working Fluid, J. Energy Institute, 80 (2007), 4, pp. 239-242
  36. Ge, Y., et al., Performance of Reciprocating Brayton Cycle with Heat Transfer, Friction and Variable Specific Heats of Working Fluid, Int. J. Ambient Energy, 29 (2008), 2, pp. 65-74
  37. Ge, Y., et al., Effects of Heat Transfer and Variable Specific Heats of Working Fluid on Performance of a Miller Cycle, Int. J. Ambient Energy, 26 (2005), 4, pp. 203-214
  38. Chen, L., Ge, Y., Sun, F., Unified Thermodynamic Description and Optimization for a Class of Irreversible Reciprocating Heat Engine Cycles, Proceedings, IMechE, Part D: J. Automobile Engineering, 222 (2008), D8, pp. 1489-1500
  39. Al-Sarkhi, A., et al., Effects of Friction and Temperature-Dependent Specific-Heat of the Working Fluid on the Performance of a Diesel-Engine, Appl. Energy, 83 (2006), 2, pp. 153-165
  40. Al-Sarkhi, A., Jaber, J. O., Probert, S. D., Efficiency of a Miller Engine, Appl. Energy, 83 (2006), 4, pp. 343-351
Volume 14, Issue 4, Pages887 -896