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A thermoacoustic engine capable of utilizing multi-temperature heat sources

机译：利用多温度热源的热声发动机

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摘要

Low-grade energy is widespread. However, it cannot be utilized with high thermal efficiency directly. Following the principle of thermal energy cascade utilization, a thermoacoustic engine (TE) with a new regenerator that can be driven by multiple heat sources at different temperature levels is proposed. Taking a regenerator that utilizes heat sources at two temperatures as an example, theoretical research has been conducted on a traveling-wave TE with the new regenerator to predict its performance. Experimental verification is also done to demonstrate the benefits of the new regenerator. Results indicate that a TE with the new regenerator utilizing additional heat at a lower temperature experiences an increase in pressure ratio, acoustic power, efficiency, and exergy efficiency with proper heat input at an appropriate temperature at the mid-heater. A regenerator that uses multi-temperature heat sources can provide a means of recovering lower grade heat.
机译：低品位能源广泛存在。但是，不能直接以高热效率利用它。遵循热能级联利用的原理，提出了一种带有新蓄热器的热声发动机（TE），该蓄热器可以由处于不同温度水平的多个热源驱动。以在两个温度下利用热源的蓄热器为例，使用新型蓄热器对行波TE进行了理论研究，以预测其性能。还进行了实验验证，以证明新型再生器的好处。结果表明，使用新型蓄热器的TE在较低温度下利用更多的热量，在中部加热器的适当温度下输入适当的热量，压力比，声功率，效率和火用效率都会增加。使用多温度热源的蓄热器可以提供回收较低品位热量的方法。

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  • 来源
    《Energy Conversion & Management》 |2009年第12期|3187-3192|共6页
  • 作者

    Limin Qiu; Bo Wang; Darning Sun; Yu Liu; Ted Steiner;

  • 作者单位

    Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, PR China;

    Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, PR China;

    Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, PR China;

    Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, PR China;

    Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    thermoacoustic engine; regenerator; multi-temperature; low-grade heat source;

    机译：热声发动机;再生器多温度低品位热源;

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