Characterization of bidirectional impulse turbines for thermoacoustic engines

Michael A.G. Timmer; Theo H. Van Der Meer

doi:10.1121/1.5134450

Characterization of bidirectional impulse turbines for thermoacoustic engines

Michael A.G. Timmer^*, Theo H. Van Der Meer

^*Corresponding author for this work

Thermal Engineering

Research output: Contribution to journal › Article › Academic › peer-review

12 Citations (Scopus)

174 Downloads (Pure)

Abstract

A bidirectional impulse turbine to convert thermoacoustic power into electricity is investigated. Experimental measurements are done with a loudspeaker for varying acoustic conditions and turbine loads. The results are used to characterize the turbine performance and compare it to steady flow turbomachinery and turbines in oscillating water columns. A dimensional analysis is done to identify the variables that influence the turbine performance, after which a scaling is determined that uniquely determines the efficiency of the turbine. The work is finished by providing the impedance of the bidirectional turbine such that it can be implemented in a thermoacoustic engine.

Original language	English
Pages (from-to)	3524-3535
Number of pages	12
Journal	The Journal of the Acoustical Society of America
Volume	146
Issue number	5
DOIs	https://doi.org/10.1121/1.5134450
Publication status	Published - 1 Nov 2019

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AB - A bidirectional impulse turbine to convert thermoacoustic power into electricity is investigated. Experimental measurements are done with a loudspeaker for varying acoustic conditions and turbine loads. The results are used to characterize the turbine performance and compare it to steady flow turbomachinery and turbines in oscillating water columns. A dimensional analysis is done to identify the variables that influence the turbine performance, after which a scaling is determined that uniquely determines the efficiency of the turbine. The work is finished by providing the impedance of the bidirectional turbine such that it can be implemented in a thermoacoustic engine.

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Characterization of bidirectional impulse turbines for thermoacoustic engines

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