INVESTIGATION ON SELF-SUSTAINED OSCILLATION CHARACTERISTIC OF THERMOACOUSTIC STACK

Self-sustained oscillation characteristic of thermoacoustic stack is quantitatively proven based on thermodynamic theory to be negative damped oscillation. The stack is thermoacoustic source of thermoacoustic engine. It absorbs heat energy from outside heat source to compensate for heat loss of the thermoacoustic engine and keep the engine oscillate. The characteristic of different stack is made compare. Theoretical base for choosing stack matrices is provided.