After acoustic power output of the thermoacoustic engine was measured accurately by variable-load method,the mutual relations of power output with pressure ratio,heating power and heating temperature were analyzed.

• 应用变负载法；对该热声发动机的声功输出进行了精确测量.；分析得到声功输出与热声发动机压比、加热功率和加热温度之间的相互影响关系