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A fundamental study on characteristic of thermoacoustic engine with different tilt angles

机译：不同倾角的热声发动机特性基础研究

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摘要

Solar powered thermoacoustic engine is an attractive device for solar thermal utilization. Its performance is significantly affected by tilt angle when it rotates with the sun. In this study, the heat transfer and flow characteristics of thermoacoustic engine were investigated under five tilt angles including -45°, -90°, 0°, 45° and 90°. The temperature and velocity fields of thermoacoustic core were measured respectively by Thermal Infrared Imager and Particle Image Velocimetry (PIV). Experimental results show that acoustic oscillation has significant influence on the flow and heat transfer in thermoacoustic engine. This kind of influence is different when thermoacoustic engine works under different tilt angles. Five tilt angles were classified into three situations according to the relative position of two heat exchangers. And the interaction of thermal convection and acoustic oscillation was discussed in each situation.
机译：太阳能热声引擎是用于太阳能热利用的有吸引力的设备。它的性能受太阳旋转时倾斜角度的影响很大。在这项研究中，研究了热声发动机在-45°，-90°，0°，45°和90°五个倾斜角下的传热和流动特性。通过热红外成像仪和粒子图像测速仪（PIV）分别测量了热声芯的温度和速度场。实验结果表明，声振荡对热声发动机的流动和传热有重要影响。当热声发动机在不同的倾斜角度下工作时，这种影响是不同的。根据两个热交换器的相对位置，将五个倾斜角分为三种情况。并讨论了每种情况下热对流与声振荡的相互作用。

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  • 来源
  • 作者

    Na Pan; Shuangfeng Wang; Chao Shen;

  • 作者单位

    The Key Lab of Enhanced Heat Transfer and Energy Conservation Ministry of Education, South China University of Technology, Guangzhou 510640, China;

    The Key Lab of Enhanced Heat Transfer and Energy Conservation Ministry of Education, South China University of Technology, Guangzhou 510640, China;

    School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China;

  • 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; Tilt angle; Thermal convection; PIV;

    机译：热声发动机;倾斜角度;热对流;PIV;

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