Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 09, 2018 - September 12, 2018
This paper reports electricity generation by exploiting self-excited thermoacoustic oscillations in a looped tube with a pair of stacks placed on diametrically opposite positions in the tube. Each stack is sandwiched by hot and cold (ambient) heat exchangers and a temperature gradient is imposed in the same sense along the tube. Transforming pressure fluctuations by the oscillations into a rectilinear motion of a bellows attached to the looped tube via a branched tube, electricity is generated by driving a linear (voice coil) motor inversely connected to the bellows axially. It is observed that when the temperature gradient is appropriate, the thermoacoustic oscillations are spontaneously excited in the tube and that the linear motor is driven to generate a voltage of 10.8 V across two open terminals of the motor.
