TITLE

Low temperature differential thermoacoustic Stirling engine

AUTHOR(S)
Biwa, Tetsushi; Hasegawa, Daichi; Yazaki, Taichi
PUB. DATE
July 2010
SOURCE
Applied Physics Letters;7/19/2010, Vol. 97 Issue 3, p034102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
To what extent can we lower the critical temperature ratio (CTR) necessary to start a thermoacoustic engine? We present an experimental method for predicting the CTR before the temperature ratio arrives at it using quality factor measurements. Based on the experimental quality factors, we tried to decrease the CTR of a thermoacoustic Stirling engine consisting of a looped tube and a branch resonator. Installation of the multiple regenerators at suitable positions can markedly enhance acoustic power production while overcoming energy dissipation. Results show that the CTR is decreased from 1.76 to 1.19 using five differentially heated regenerators.
ACCESSION #
52479402

 

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