Suspension design, modeling, and testing of a Thermo-acoustic driven linear Alternator

Chitta Saha, Paul Riley, Robert Jinks, Mark Johnson

Research output: Contribution to journalArticlepeer-review

Abstract

The Score-Stove™ generates electricity from a wood-burning cooking stove using a thermo-acoustic engine that converts heat to sound through a Linear Alternator (LA). This paper introduces a prototype hemi-toroidal suspension that was refined into a segmented trapezoidal shape that gave a higher cyclic life for the linear alternator and includes a critical evaluation that compares a theoretical analysis with experimental results. The results show an improvement from the 40% efficiency of a standard loudspeaker used in reverse as an LA to 70 to 80% efficiency with the new suspension and a double Halbach array magnetic topology.
Original languageEnglish
Article number021014
Number of pages5
JournalJournal of Vibration and Acoustics Transaction on ASME
Volume140
Issue number2
Early online date10 Nov 2017
DOIs
Publication statusPublished - Apr 2018

Keywords

  • Heat
  • Loudspeakers
  • Testing
  • Modeling
  • Design
  • Thermoacoustic devices
  • Engineering prototypes
  • Wood products
  • Acoustics
  • Combustion

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