Experimental investigations on high-frequency thermoacoustic engine

In Current work, experimental investigations are carried out on a high-frequency thermoacoustic engine used for driving a pulse tube cooler. During the course of work, two different working gases namely Helium and Nitrogen, two different lengths of engine stack, two heater housing configurations and two different configurations of the ambient heat exchanger are experimentally tested and almost four times better performance in terms of pressure amplitude is observed with the combination of better component configurations for the current experimental setup. All the while, the performance of the engine is assessed by pressure amplitude and onset temperature only. Moreover, this experimental work provided better guidance for designing and fabricating an efficient engine used to drive the pulse tube cooler.