Abstract One of the most promising types of energy to generate electricity is the vibrations of atoms by sound waves caused by thermal energy, known as thermoacoustic energy. A manner of recovering heat from a low-temperature source or solar energy can cause sound oscillations, which can be converted to electrical energy. This form of energy draws little attention compared to other energy sources that are highly explored nowadays. This study aimed to present an analytical and experimental study of a thermoacoustic Stirling engine system. The proposed system was formed to deliver more power than those systems that do not use moving parts, such as piezoelectric and thermoelectric devices, as harvesters. The prototype under study was made of pure aluminum heated by a heat source, a resonant tube with the stack, fibra wood to insulate hot and cold side gases, a piston-flywheel harvester, and a dynamo motor for electrical conversion. It used an alcohol lamp as the heat source. The maximum temperature difference of 71°C was recorded. The maximum generated power from the system was 39.36 W.
Atienza et al. (Mon,) studied this question.