Thermoacoustic Engine

A thermoacoustic engine comprising:

• a plurality of resonance pipes in which a working gas is enclosed and that are formed in a ring shape as a whole;
• a plurality of motors that couple the plurality of resonance pipes;
• and a branch pipe of which one end is connected to communicate with the resonance pipes from an intersection between a start point and an end point of a loop forming the ring shape among the plurality of resonance pipes, wherein
• each of the motors has a regenerator that heats and cools the working gas, a heater that is adjacent to one end side of the regenerator to heat one end section of the regenerator, and a cooler that is adjacent to other end side of the regenerator to discharge heat in other end section of the regenerator to an outside,
• a temperature gradient is given between the both end sections of the regenerator to generate self-excited oscillation of the working gas,
• a channel cross-sectional area of the resonance pipe that is coupled to each heater is expanded by a same amplification factor of a work flow based on the self-excited oscillation or by an amplification factor within a range of ±30% of the amplification factor of the work flow to a channel cross-sectional area of a resonance pipe that is coupled to the cooler of the motor having the heater, and
• a channel cross-sectional area of the regenerator is set by 4 to 36 times of the channel cross-sectional area of the resonance pipe that is coupled to the cooler of the motor having the regenerator.