Abstract
We report test results on a thermoacoustic engine having a piston-crank-flywheel assembly. The engine maintained steady rotation states when the heating temperature was increased more than 114°C. The rotation frequency increased with the higher heating temperature and reached 14.5 Hz when it was 296°C. The pressure versus volume diagram was created to deduce the power delivered to the piston-crank-flywheel assembly from measurements of the pressure of the working gas and the rotation angle of the flywheel.
Highlights
A thermoacoustic engine with a piston–flywheel assembly has been developed [1]
The thermoacoustic engine is the acoustical heat engine that is based on thermally induced oscillations of a gas column [2]
The output power of the acoustical engine is the acoustic power associated with the generated sound waves
Summary
A thermoacoustic engine with a piston–flywheel assembly has been developed [1]. The thermoacoustic engine is the acoustical heat engine that is based on thermally induced oscillations of a gas column [2]. The thermoacoustic engine with a flywheel has replaced the linear alternator with a flywheel that can be connected to a rotational alternator in the same way as a bidirectional turbine [5]. The model incorporates the input acoustic impedance of the engine subsystem described by the thermoacoustic theory in the frequency domain and transforms it to the ordinary differential equation in the time domain, to couple it with the equation of motion of the flywheel. This calculation method needs further investigation to establish its validity. We report measurement results of the rotation angle and pressure during the steady operation of the engine. *
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