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


    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
    Issue number2
    Early online date10 Nov 2017
    Publication statusPublished - Apr 2018


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


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