摘要
Pressure ratio is one of the important parameters for evaluating a thermoacoustic heat en- gine. A so-called acoustical pump, which is capable of significantly increasing pressure ratio of a ther- moacoustic heat engine, is proposed. Its operating principle is given. Also, a verification experiment is done with nitrogen gas in the energy-focused ther- moacoustic heat engine, showing that the pressure ratio increased from 1.25 to 1.47.
Pressure ratio is one of the important parameters for evaluating a thermoacoustic heat engine. A so-called acoustical pump, which is capable of significantly increasing pressure ratio of a thermoacoustic heat engine, is proposed. Its operating principle is given. Also, a verification experiment is done with nitrogen gas in the energy-focused thermoacoustic heat engine, showing that the pressure ratio increased from 1.25 to 1.47.
基金
supported by the Chinese Academy of Sciences(Grant No.KJCX2-SW12-12-0)
National Natural Science Foundation of China(Grant No 50536040).
关键词
压力比
声泵
热力工程
实验研究
thermoacoustic engine, pressure ratio, acoustic pump.
