Two-Stage Thermoacoustic Electricity Generator for Waste Heat Recovery

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


This paper presents the design, construction and tests of a two-stage traveling-wave thermoacoustic electricity generator. The engine designed has two stages with a Linear Alternator connected in between two points having equal but out of phase acoustic pressure amplitudes. The connection of Linear Alternator in this configuration allows it to be run by the effect of acoustic pressure on both sides and work in a "push-pull" mode. Pressurized helium at 28 bar is used as working gas and operating frequency is 54.68 Hz. In the experiments, a maximum generated electricity and thermal-to-electric efficiency of 48.6 W and 2.7% are obtained, respectively, when the temperature difference across the regenerator reaches 300˚C at 30.8 Ω load resistance. The research results shown in this paper demonstrate that two identical half-wave length stages can run a linear alternator in “push-pull” mode.
Original languageEnglish
Title of host publicationProceedings of World Congress on Engineering, (London, 29 June - 1 July 2016)
EditorsS.I. Ao, Len Gelman, David W.L. Hukins, Andrew Hunter, A.M. Korsunsky
PublisherNewswood Limited
Number of pages6
ISBN (Print)9789881404800
Publication statusPublished - 1 Jul 2016
EventInternational Association of Engineers World Congress on Engineering 2016 - London, United Kingdom
Duration: 29 Jun 20161 Jul 2016 (Link to Conference Website)

Publication series

NameLecture Notes in Engineering and Computer Science
ISSN (Print)2078-0958
ISSN (Electronic)2078-0966


ConferenceInternational Association of Engineers World Congress on Engineering 2016
Abbreviated titleWCE 2016
Country/TerritoryUnited Kingdom
Internet address


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