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    夏晨

    • 讲师
    • 招生学科专业:
      航空宇航科学与技术 -- 【招收硕士研究生】 -- 能源与动力学院
      能源动力 -- 【招收硕士研究生】 -- 能源与动力学院
    • 学历:南京航空航天大学
    • 学位:工学博士学位
    • 所在单位:能源与动力学院
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    Study on the new hybrid thermodynamic cycle for an improved micro swing engine with heat recovery process

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    所属单位:能源与动力学院

    发表刊物:APPLIED THERMAL ENGINEERING

    关键字:Micro swing engine Hybrid thermodynamic cycle Buffering recuperator Asynchronous heat exchange Intermittent flow

    摘要:In this research, a novel hybrid thermodynamic cycle with an asynchronous buffering heat recovery process is proposed to overcome the extremely difficult problem for micro swing engine, i.e. the far too low efficiency. Firstly, the 3-arm micro swing engine is presented, which is proven to hold a better performance than the original 2-arm one. Among the 3 chambers, two are isometric and operate in four-stroke cycle while the rest has a slightly larger volume and works in two-stroke cycle. Then, depending on the reasonable structural design, a novel asynchronous buffering recuperator suitable for the 3-arm structure was designed and the hybrid thermodynamic cycle with heat recovery process was introduced. That is, the gas in the four-stroke chambers recycle all the exhaust heat while the gas in two-stroke ones do not. In the recuperator, the cold flow is intermittent and the heat exchange process is asynchronous. But CFD simulations demonstrate that this buffering recuperation method is effective in settling the problems. Finally, the performance of the hybrid cycle was analyzed. The results indicate that the efficiency of the novel engine reached as high as 11.74%, which was increased by 40.77% in comparison with the one without a recuperator. (C) 2017 Elsevier Ltd. All rights reserved.

    ISSN号:1359-4311

    是否译文:

    发表时间:2018-01-25

    合写作者:Zhang, Zhiguang,黄国平,Xu, Yikai

    通讯作者:Zhang, Zhiguang,夏晨