Abstract
Thermoacousitic engines are one of promising devices for utilization of unused thermal energy. However, they need large temperature difference to induce thermoacoustic gas oscillation. In order to solve this inconvenience, the thermoacoustic engine utilizing evaporation and condensation of fluid have been studied. Experiments are carried out by using water as working fluid. The condition of continuous generation of sound wave was clarified in relation to the input amount of heat and cooling condition of stack. The optimum operating condition for heat-sound conversion was also indicated. Based on analysis of sound frequency, the mechanism of thermoacoustic phenomenon in this system was discussed.
