Abstract
A cyclic model of an irreversible Diesel heat engine is presented, in which the heat loss between the working fluid and the ambient during combustion, the irreversibility inside the cyclic working fluid resulting from friction, eddies flow, and other irreversible effects are taken into account. By using the thermodynamic analysis and optimal control theory methods, the analytical expressions of power output and efficiency of the Diesel heat engine are derived. Variations of the main performance parameters with the pressure ratio of the cycle are analyzed and calculated. The optimum operating region of the heat engine is determined. Moreover, the optimum criterion of some important parameters, such as the power output, efficiency, pressure ratio, and temperatures of the working fluid at the related state points are illustrated and discussed. The conclusions obtained in the present paper may provide some theoretical guidance for the optimal parameter design of a class of internal-combustion engines.
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References
Rubin M H. Optimal configuration of a class of irreversible heat engines. I. Physical Review A, 1979, 19(3): 1272–1276
Salamon P, Nitzan A, Andresen B, Berry R. Minimum entropy production and the optimization of heat engines. Physical Review A, 1980, 21(6): 2115–2129
Angulo-Brown F, Rocha-Martinez J, Navarrete-Gonzalez I. A nonendoreversible Otto cycle model: improving power output and efficiency. Journal of Physics. D, Applied Physics, 1996; 29(1): 80–83
Chen Lingen, Wu Chih, Sun Fengrui, Cao Shui. Heat transfer effects on the net work output and efficiency characteristics for an airstandard Otto cycle. Energy Conversion and Management, 1998, 39(7): 643–648
Chen Lingen, Wu Chih, Chen Jincan. Recent Advances in Finite-Time Thermodynamics. New York: Nova Sci Publishers, Inc., 1999
Mozurkewich M, Berry R. Finite-time thermodynamics: Engine performance improved by optimized piston motion. Proc. Natl. Acad. Sci USA, 1981, 78(4): 1986–1988
Mozurkewich M, Berry R. Optimal paths for thermodynamic systems: The ideal Otto cycle. Journal of Applied Physics, 1982, 53(1): 34–42
Hoffman K, Watowich S, Berry R. Optimal paths for thermodynamic systems: The ideal diesel cycle. Journal of Applied Physics, 1985, 58(6): 2125–2134
Akash B. Effect of heat transfer on the performance of an air-standard diesel cycle. International Communications in Heat and Mass Transfer, 2001, 28(1): 87–95
Calvo A, Medina A, Roco J, Velasco S. On an irreversible air standard Otto-cycle model. European Journal of Physics, 1995, 16(1): 73–75
Bhattacharyya S. Optimizing an irreversible diesel cycle—Fine tuning of compression ratio and cut-off ratio. Energy Convers Mgmt, 2000, 41(8): 847–854
Chen Lingen, Lin Junxing, Luo Jun, Sun Fengrui, Wu Chih. Friction effect on the characteristic performance of diesel engines. International Journal of Energy Research, 2002, 26(11): 965–971
Chen L, Zheng T, Sun F, Wu C. The power and efficiency characteristics for an irreversible Otto cycle. International Journal of Ambient Energy, 2003, 24(4): 195–200
Angulo-Brown F. An ecological optimization criterion for finitetime heat engines. Journal of Applied Physics, 1991; 69(11): 7465–7469
Yan Zijun. Comment on “An ecological optimization criterion for finite-time heat engines” [J. Appl. Phys. 69, 7465(1991)]. Journal of Applied Physics, 1993, 73(7): 3583
Cheng Ching-Yang, Chen Cha’o-Kung, The ecological optimization of an irreversible Carnot heat engine. J. Phys. D: Appl Phys, 1997, 30(1): 1602–1609
Yan Zijun, Lin Guoxing. Ecological optimization criterion for an irreversible three-heat source refrigerator. Applied Energy, 2000, 66(3): 213–224
Cheng Ching-Yang. The optimum allocation of heat transfer equipment for an irreversible combined heat engine with ecological criteria. Int. Comm. Heat Mass Transfer, 2004, 31(4): 573–584
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Zheng, S., Lin, G. Optimization of power and efficiency for an irreversible Diesel heat engine. Front. Energy Power Eng. China 4, 560–565 (2010). https://doi.org/10.1007/s11708-010-0018-9
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DOI: https://doi.org/10.1007/s11708-010-0018-9