Design of two-stage thermoacoustic stirling engine coupled with push-pull linear alternator for waste heat recovery

Ahmed Hamood, Xiaoan Mao, Artur J. Jaworski

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

Abstract

Thermoacoustics is suitable technology for recovering waste heat and generating electricity. In this paper, a novel thermoacoustic electricity generator using a push-pull linear alternator is proposed. It is aimed to recover part of the internal combustion engine exhaust waste heat and produce useful electricity. It consists of two half wave length identical stages and a linear alternator connected in between them. The physically identical stages produce identical wave halves with acoustic pressure out of phase. The availability of two points having the same pressure amplitude out of phase provides the opportunity to connect the linear alternator to two points in each stage to run the alternator in a "push and pull" mode. The proposed engine is able to produce more than 138.4W of electricity at thermal-to-electrical efficiency of 25.1% equivalent to a fraction of Carnot efficiency of 45.1% while using helium pressurized at 40 bar.

Original languageEnglish
Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
PublisherInternational Institute of Refrigeration
Pages3922-3929
Number of pages8
ISBN (Electronic)9782362150128
DOIs
Publication statusPublished - 22 Aug 2015
Externally publishedYes
Event24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan
Duration: 16 Aug 201522 Aug 2015

Publication series

NameRefrigeration Science and Technology
ISSN (Print)0151-1637

Conference

Conference24th IIR International Congress of Refrigeration, ICR 2015
Country/TerritoryJapan
CityYokohama
Period16/08/1522/08/15

Cite this