Skip to main content
SpringerLink
Log in

The effects of heat transfer on the exergy efficiency of an air-standard otto cycle

  • Original
  • Published:
Heat and Mass Transfer Aims and scope Submit manuscript

Abstract

The exergy analysis of an air-standard Otto cycle with heat transfer loss is analyzed by using finite-time thermodynamics. The results showed that the heat transfer loss is responsible for a significant destruction of exergy. It is also shown that exergy efficiency and maximum power output increase with decreasing heat transfer loss. The results obtained in this paper may provide useful information for the maximum work available.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

Abbreviations

A :

Constant related to combustion

B :

Constant related to heat transfer

C v :

Constant volume specific heat (J kg−1 K−1)

e :

Specific exergy (kJ kg−1)

E :

Exergy (kJ)

G :

Gibbs free energy (kJ)

h :

Specific enthalpy (kJ kg−1)

k :

Ratio of specific heats

m :

Mass (kg)

P :

Pressure (kPa)

q :

Heat transfer per unit mass (kJ kg−1)

Q :

Heat transfer per unit working fluid mass per cycle (kJ kg−1)

s :

Specific entropy (kJ kg−1)

T :

Temperature (K)

u :

Specific internal energy (kJ kg−1)

v :

Specific volume (m3 kg−1)

W :

Work per unit working fluid mass per cycle (kJ)

γ :

Compression ratio

η :

First-law efficiency,

η II :

Second-law efficiency

f :

Fuel

max:

Maximum

o :

Environment

References

  1. Chen L, Wu C, Sun F (1999) Finite time thermodynamic optimization or entropy generation minimization of energy systems. J Non-Equilib Thermodyn 24(4):327–359

    Article  MATH  Google Scholar 

  2. Chen L, Sun F (2004) Advances in finite time thermodynamics: analysis and optimization. Nova Science Publishing, New York

    Google Scholar 

  3. Mozurkewich M, Berry RS (1982) Optimal paths for thermodynamics systems: the ideal Otto cycle. J Appl Phys 53(1):34–42

    Article  Google Scholar 

  4. Aizenbud BM, Band YB, Kafri O (1982) Optimization of a model internal combustion engine. J Appl Phys 53(3):1277–1282

    Article  Google Scholar 

  5. Chen L, Sun F, Wu C (1998) Optimal expansion of a heated working fluid with linear phenomenological heat transfer. Energy Convers Manag 39(3/4):149–156

    Article  Google Scholar 

  6. Orlov VN, Berry RS (1993) Power and efficiency limits for internal combustion engines via methods of finite-time thermodynamics. J Appl Phys 74(10):4317–4322

    Article  Google Scholar 

  7. Angulo-Brown F, Fernandez-Betanzos J, Diaz-Pico CA (1994) Compression ratio of an optimized Otto-cycle model. Eur J Phys 15(1):38–42

    Article  Google Scholar 

  8. Chen L, Zheng T, Sun F, Wu C (2003) The power and efficiency characteristics for an irreversible Otto cycle. Int J Ambient Energy 24(4):195–200

    Google Scholar 

  9. Qin X, Chen L, Sun F (2003) The universal power and efficiency characteristics for irreversible reciprocating heat engine cycles. Eur J Phys 24(4):359–366

    Google Scholar 

  10. Klein SA (1991) An explanation for observed compression ratios in internal combustion engines. Trans ASME J Engrg Gas Turbine Pow 113(4):511–513

    Article  Google Scholar 

  11. Wu C, Blank DA (1992) The effects of combustion on a work-optimized endoreversible Otto cycle. J Instit Energy 65(1):86–89

    Google Scholar 

  12. Blank DA, Wu C (1993) Optimization of the endoreversible Otto cycle with respect to both power and mean effective pressure. Energy Convers Manag 34(12):1209–1255

    Google Scholar 

  13. Chen L, Wu C, Sun F, Cao S (1998) Heat transfer effects on the net work output and efficiency characteristics for an air standard Otto cycle. Energy Convers Manag 39(7):643–648

    Article  Google Scholar 

  14. Hoffman F (2004) Can a quantitative simulation of an Otto engine be accurately rendered by a simple Novikov model with heat leak? J Non Equilib Thermodyn 29(1):9–28

    Article  Google Scholar 

  15. Ge Y, Chen L, Sun F, Wu C (2005) Thermodynamic simulation of performance of an Otto cycle with heat transfer and variable specific heats of working fluid. Int J Therm Sci 44(5):506–511

    Article  Google Scholar 

  16. Rakopoulos CD, Giakoumis EG (2006) Second-law analyses applied to internal combustion engines Operation. Prog Energy Combust Sci 32:2–47

    Article  Google Scholar 

  17. Caton JA (2000) A review of investigations using the second law of thermodynamics to study internal- combustion engines. SAE Paper 2000–01–1081:1–15

  18. Clarke JM (1976) The thermodynamic cycle requirements for very high rational efficiencies; proceedings of the sixth thermodynamics and fluid convention, University of Durham, paper no. C53/76, Institute of mechanical engineers, London, England

  19. Lior N, Rudy GJ (1988) Second-law analysis of an ideal otto cycle. Energy Convers Manag 28:327–334

    Article  Google Scholar 

  20. Anderson MK, Assanis DN, Filipi ZS (1998) First and second law analyses of a naturally-aspirated, miller cycle, SI engine with late intake valve closure. SAE Paper 980889:1–16

    Google Scholar 

  21. Heywood JB (1998) Internal combustion engine fundamentals. McGraw-Hill Book Company, New York

    Google Scholar 

  22. Abu-Nada E, Al-Hinti I, Al-Sarkhi A, Akash B (2006) Thermodynamic modeling of spark-ignition engine: effect of temperature dependent specific heats. Int Commun Heat Mass Trans 33:1264–1272

    Article  Google Scholar 

  23. Zhecheng L, Brun M, Badin F (1991) A parametric study of SI engine efficiency and of energy and availability losses using a cycle simulation. SAE paper no. 910005. Society of Automotive Engineers Inc, Warrendale, PA

  24. Left HS (1987) Thermal efficiency at maximum work output: new results for old heat engines. Am J Phys 55(7):602–610

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Ondokuz Mayis University, 55139, Samsun, Turkey

    Hakan Özcan

Authors
  1. Hakan Özcan
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hakan Özcan.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Özcan, H. The effects of heat transfer on the exergy efficiency of an air-standard otto cycle. Heat Mass Transfer 47, 571–577 (2011). https://doi.org/10.1007/s00231-010-0749-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00231-010-0749-5

Keywords

Search

Navigation