Numerical and Experimental Study on the Thermoacoustic Power Generation with Rotating Machinery

被引：0
|
作者：
Liu D. [1 ,2 ]
Chen Y. [1 ]
Dai W. [1 ]
Luo E. [1 ]
机构：
[1] Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing
[2] University of Chinese Academy of Sciences, Beijing
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2019年 / 53卷 / 05期
关键词：
Bi-directional impulse turbine; Rotating mechanical acousto-electric conversion; Thermoacoustic power generation;
D O I：
10.7652/xjtuxb201905009
中图分类号：
学科分类号：
摘要：
A new type of acoustic-electrical conversion method for thermoacoustic power generation with rotating machinery is introduced. Numerical and experimental studies on a bi-directional turbine were conducted. A 100-Watt turbine with fixed guide vane was optimized and designed under both steady inlet flow and compressible oscillating flow conditions. Its characteristics at constant speed and constant load output under steady air flow and atmospheric pressure were investigated. The maximum shaft power output of the turbine is 230 W, and the maximum turbine efficiency is 51%(with 4 000 r/min rotating speed, 83 W output shaft power and 1.9 flow coefficient). The experimental and numerical results were compared and analyzed, which shows that there is obvious deviation between the 2D model calculation and experimental results, but the 2D model still has guiding significance for the prediction of system performance. The 3D model overcomes the shortage of 2D model due to taking into account the radial distribution of blade rotation speed and the influence of tip clearance, and matches well with the experimental data. This work may provide a guidance for further optimizing and analyzing the bi-directional impulse turbines in oscillating flow. © 2019, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：58 / 66
页数：8
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