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Influence of heat loss on the performance of an air-standard Atkinson cycle

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  • Lin, Jiann-Chang
  • Hou, Shuhn-Shyurng

Abstract

This study is aimed at investigating the effects of heat loss, as characterized by a percentage of fuel's energy, friction and variable specific heats of the working fluid, on the performance of an air-standard Atkinson cycle under the restriction of the maximum cycle-temperature. A more realistic and precise relationship between the fuel's chemical-energy and the heat leakage is derived through the resulting temperature. The variations in power output and thermal efficiency with compression ratio, and the relations between the power output and the thermal efficiency of the cycle are presented. The results show that the power output as well as the efficiency, for which the maximum power-output occurs, will rise with the increase of maximum cycle-temperature. The temperature-dependent specific heats of the working fluid have a significant influence on the performance. The power output and the working range of the cycle increase while the efficiency decreases with the rise of specific heats of working fluid. The friction loss has a negative effect on the performance. Therefore, the power output and efficiency of the Atkinson cycle decrease with increasing friction loss. It is noteworthy that the results obtained in the present study are of significance for providing guidance with respect to the performance evaluation and improvement of practical Atkinson-cycle engines.

Suggested Citation

  • Lin, Jiann-Chang & Hou, Shuhn-Shyurng, 2007. "Influence of heat loss on the performance of an air-standard Atkinson cycle," Applied Energy, Elsevier, vol. 84(9), pages 904-920, September.
    • Handle: RePEc:eee:appene:v:84:y:2007:i:9:p:904-920
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    References listed on IDEAS

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    1. Chen, Lingen & Sun, Fengrui & Wu, Chih, 2004. "Optimal performance of an irreversible dual-cycle," Applied Energy, Elsevier, vol. 79(1), pages 3-14, September.
    2. Al-Sarkhi, A. & Jaber, J.O. & Abu-Qudais, M. & Probert, S.D., 2006. "Effects of friction and temperature-dependent specific-heat of the working fluid on the performance of a Diesel-engine," Applied Energy, Elsevier, vol. 83(2), pages 153-165, February.
    3. Al-Sarkhi, A. & Jaber, J.O. & Probert, S.D., 2006. "Efficiency of a Miller engine," Applied Energy, Elsevier, vol. 83(4), pages 343-351, April.
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    4. Shuangshuang Shi & Yanlin Ge & Lingen Chen & Huijun Feng, 2021. "Performance Optimizations with Single-, Bi-, Tri-, and Quadru-Objective for Irreversible Atkinson Cycle with Nonlinear Variation of Working Fluid’s Specific Heat," Energies, MDPI, vol. 14(14), pages 1-23, July.

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