A thermo-acoustic engine is an alternative to a conventional Stirling engine, which uses a power piston and a second piston that shuttles air between the hot and cold parts of the engine. Instead, a thermo-acoustic engine uses a travelling sound wave to do the work of a displacement piston.
This sound wave is generated by a heat source, such as a flame, and is used to move air between the hot and cold parts of the engine.
This type of engine is more efficient than a conventional Stirling engine, as it does not require a displacer piston.
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Figure 1: The thermoacoustic Stirling heat engine , constructed from steel pipe. a, Scale drawing of the engine . The variable acoustic load consists of an adjustable valve leading to a 2.2-l...
A thermoacoustic Stirling heat engine | Nature
A thermoacoustic-Stirling heat engine: Detailed study S. Backhaus and G. W. Swift Condensed Matter and Thermal Physics Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ~Received 29 May…
A thermoacoustic-Stirling heat engine: Detailed study
The system has slight theoretical advantages over other generator systems like existing thermocouple based systems, or a proposed Stirling engine used in ASRG prototype. SoundEnergy developed the THEAC system that…
Thermoacoustic heat engine - Wikipedia