Considering the effects of variable specific heats of working fluid on the performance of practical cycle, a thermodynamic model of a reversible airstandard Lenoir cycle with the linear relation between specific heat of working fluid and its temperature was established by using the classical thermodynamics. The relations between the work output and the compression ratio, between the efficiency and the compression ratio, as well as between the work output and efficiency were derived by detailed numerical examples. Moreover, by comparing with the thermodynamic performance of airstandard Lenoir cycle with constant specific heats of working fluid, it was known that the effected of variable specific heats of working fluid on the cycle performance were obvious. The results may provide some guidelines for the application of the Lenoir cycle.
引用该论文:Zhou Junle,Chen Lingen,Sun Fengrui. Thermodynamic Analysis of an Airstandard Lenoir Cycle with Linear Variable Specific Heats of Working Fluid[J]. Power & Energy, 2014, 35(6): 678～682 周骏乐,陈林根,孙丰瑞. 工质线性变比热时空气标准Lenoir循环热力学分析[J]. 电力与能源, 2014, 35(6): 678～682
【1】Carnot S. Reflections on the motive power of fire［M］. Paris: Bachelier,1824.
【2】Sieniutycz S, Salamon P (Eds.). Advances in Thermodynamics, Volume 1: C7+ Fraction Charcterization［M］. New York: Taylor & Francis,1990.
【3】Mansoori G A (Ed.). Advances in Thermodynamics, Volume 2: Fluctuation Theory of Mixtures［M］. New York:Taylor & Francis,1990.
【4】Sieniutycz S, Salamon P (Eds.). Advances in Thermodynamics, Volume 3:Nonequilibrium Theory and Extremum Principles［M］. New York: Taylor & Francis,1990.
【5】Hoffman E J (Ed.). Advances in Thermodynamics, Volume 5: Analytic Thermodynamics［M］. New York: Taylor & Francis,1991.
【6】Sieniutycz S, Salamon P (Eds.). Advances in Thermodynamics, Volume 6: Flow, Diffusion, and Rate Process［M］. New York: Taylor & Francis,1992.
【7】Klein S A. An explanation for observed compression ratios in internal combustion engines［J］. Trans. ASME J. Eng. Gas Turbine Pow.,1991,113(4):511513.
【8】AnguloBrown F , RochaMartinez J. A, NavarreteGonzalez T D. A nonendoreversible Otto cycle model:improving power output and efficiency［J］. J.Phys.D:Appl.Phys.,1996,29(1):8083.
【9】AbuNada E, AlHinti I, AlAarkhi A, et al. Thermodynamic modeling of sparkignition engine: Effect of temperature dependent specific heats［J］. Int. Comm. Heat Mass Transfer,2005,33(10):12641272.
【10】Chen L, Lin J, Sun F, et al. Efficiency of an Atkinson engine at maximum power density［J］. Energy Convers. Manage.,1998,39(3/4):337341.
【11】Ghatak A, Chakraborty S. Effect of external irreversibilities and variable thermal properties of working fluid on thermal performance of a Dual internal combustion engine cycle［J］. Strojnicky Casopsis (J. Mechanical Energy),2007,58:112.
【12】Ge Y, Chen L, Sun F, et al. Thermodynamic simulation of performance of an Otto cycle with heat transfer and variable specific heats of working fluid［J］. Int. J. Therm. Sci.,2005, 44(5):506511.
【13】Ge Y, Chen L, Sun F, et al. Performance of an endoreversible Atkinson cycle［J］. J. Energy Inst.,2007,80(1):5254.
【14】Ge Y, Chen L, Sun F, et al. Performance of an endoreversible Diesel cycle with variable specific heats of working fluid［J］. Int. J. Ambient Energy,2008,29(3):127136.
【15】Ge Y, Chen L, Sun F, et al. Performance of a reciprocating endoreversible Brayton cycle with variable specific heats of working fluid［J］. Termotehnica,2008,12(1):1923.
【16】Liu C, Chen L, Sun F. Influence of variable specific heats of working fluid on performance of an endreversible MeletisGeorgiou cycle［J］. Int. J. Ambient Energy,2012,33(1):922.
【17】Lichty C. Combustion Engine Processes［M］. New York: McGrawHill,1967.
【18】Georgiou D P. Useful work and the thermal efficiency in the ideal Lenoir with regenerative preheating［J］. J. Appl. Phys.,2008,88(10):59815986.