论文部分内容阅读
气液双作用行波热声发动机解决了传统热声发动机低频下谐振管尺寸较长、工作介质不理想以及与负载匹配困难等一系列问题,结构紧凑,功率密度高.本文设计搭建了世界首台气-液双作用行波热声发动机实验台并进行了无负载情况下的实验研究,分别测量了发动机的起振温度、谐振频率、热端温度、压力波动幅值和相位等参数随平均压力和加热量的变化情况,各压力下谐振频率均小于23 Hz,起振温度低于100℃,在1.5 MPa、1200 W加热工况下,得到1.45的压比,性能远优于传统的行波热声发动机。
The double-action traveling-wave thermoacoustic engine with gas and liquid solves a series of problems, such as the long resonant tube in low frequency of traditional thermoacoustic engine, the unsatisfactory working medium and the difficulty in matching with the load, and has the advantages of compact structure and high power density. The experiments were carried out under no-load condition. The parameters of starting temperature, resonant frequency, hot end temperature, pressure fluctuation amplitude and phase of the engine were measured with the average Pressure and heating, the resonance frequency under each pressure is less than 23 Hz and the start-up temperature is lower than 100 ℃. The pressure ratio of 1.45 under the heating conditions of 1.5 MPa and 1200 W is much better than the traditional ones Wave heat engine.