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压比是评价热声发动机的重要参数之一.提出了一种可以大幅度提高热声发动机的“声学泵”,并给出了其工作原理的理论分析.采用2.5MPa的氮气在一台聚能型的行波发动机进行了实验,表明它可以将压比从1.25提高到1.47以上.
Pressure ratio is one of the important parameters to evaluate the thermoacoustic engine.A kind of “acoustic pump” that can greatly improve the thermoacoustic engine is proposed and its theoretical analysis is given.Using 2.5MPa nitrogen in a poly The prototype traveling wave engine showed that it could raise the pressure ratio from 1.25 to over 1.47.