Theoretical And Experimental Study Of Thermoacoustic Engine

Thermoacoustics, it is a phenomenon of the thermal energy and the power of acoustics converting into each other. Because of the simplicity, without moving parts, long lifetime, high reliability and low cost, thermoacoustic system appears attractive.After a detailed review on the historical developments of the research on thermoacoustics, as well as the latest advances hi this field, prospective applications, and a survey of theoretical fundamentals, the present work focuses on the following sections:We introduce the fluid network model. After the theoretical study, a hybrid model is discussed. And we carried out the experiment to prove that the hybrid thermoacoustic engine works better than the double one.Thermoacoustic Stirling engine, traveling-wave thermoacoustic prime mover is a newly proposed thermoacoustic system. An experimental setup has been designed and built up. The system employs the inherently reversible Stirling cycle, and then its thermodynamic efficiency can easily surpass that of standing-wave system and is even comparable to that of the traditional internal combustion engines. The traveling wave system is expected to be one of the good candidates as a driver for pulse tube refrigerator, leading to a thermoacoustically driven pulse tube refrigerator without any moving component.We present a two-stage engine based on our present thermoacoutic engine. Of course, the two-stage engine will increase the magnitude of the pressure. It is also proved that it can decrease the heat temperature and overcome the limitation of the difference between the two ends of the regenerator. Multi-stage thermoacoustic engine provides a promising future for the low-quality energy.