Liquid metal thermoacoustic engine

A cascade thermoacoustic engine.

A cascade thermoacoustic engine is described, consisting of one standing-wave stage plus two traveling-wave stages in series. Most of the acoustic power is produced in the efficient traveling-wave stages. The straight-line series configuration is easy to build and allows no Gedeon streaming. The engine delivers up to 2 kW of acoustic power, with an efficiency (the ratio of acoustic power to hea...

A hot air driven thermoacoustic-Stirling engine

Thermoacoustic Heat Engine Modeling and Design Optimization∗

Thermoacoustic heat engines (TAEs) are potentially advantageous drivers for thermoacoustic refrigerators (TARs). Connecting TAEs to TARs means that waste heat can effectively be utilized to provide cooling, and increase overall efficiency. However, this is currently a niche technology. Improvements can be made through a better understanding of the interactions of relevant design parameters. Thi...

Optimization of thermoacoustic engine driven thermoacoustic refrigerator using response surface methodology

Thermoacoustic engines (TAEs) are devices which convert heat energy into useful acoustic work whereas thermoacoustic refrigerators (TARs) convert acoustic work into temperature gradient. These devices work without any moving component. Study presented here comprises of a combination system i.e. thermoacoustic engine driven thermoacoustic refrigerator (TADTAR). This system has no moving componen...

Self-tuning Mechanism in a Looped Tube Thermoacoustic Engine

We constructed a looped tube thermoacoustic engine equipped with a stack made of ceramics having many square pores and two heat exchangers. We employed three stacks with different pore sizes and studied the effect of changing the pore size on the acoustic field excited in the present engine through the pressure and velocity measurements. By analysing the experimental data, we are led to conclud...