Study on the onset temperature of a standing-wave thermoacoustic engine based on circuit network theory

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• 作者：LiMin Qiu (1)
  BiHui Lai (1)
  YiTao Zhao (1)
  DaMing Sun (1) sundaming@zju.edu.cn
  XueJun Zhang (1)
  YanFeng Li (1)
• 关键词：standing ; wave – ; thermoacoustic engine – ; activity criterion – ; instability criterion – ; onset temperature
• 刊名：SCIENCE CHINA Technological Sciences
• 出版年：2012
• 出版时间：October 2012
• 年：2012
• 卷：55
• 期：10
• 页码：2864-2868
• 全文大小：711.2 KB
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• 作者单位：1. Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou, 310027 China
• ISSN：1869-1900

文摘

Onset mechanism is one of the most fundamental issues in thermoacoustic field. However, the onset conditions and the phenomena happening in the onset process have not been well explained theoretically. In this paper, a novel model based on the circuit network analogy is proposed to predict the onset temperature of a standing-wave thermoacoustic engine. The activity and instability criteria are proposed to be the onset criteria in the model. The influences of the porosity of the heat exchanger and the stack, and the length of the resonant tube on the onset temperature are analyzed. The calculated results are in agreement with the experimental results, which indicates that the activity and instability criteria can be used to predict the onset conditions of a thermoacoustic engine.