Thermoacoustic systems convert energy from heat to acoustic power and vice versa. These systems have commercial interest due to the high potential efficiency and low number of moving parts. To numerically predict the performance of a thermoacoustic device inherent nonlinearities in the system, such as thermoacoustic streaming and generation of harmonics need to be taken into account. We present...

Inconsistencies in fabricated thermoacoustic stacks are due to the methods available obtain desired geometry and dimensions even under optimized design parameters. This paper presents performance results from using 3D printing technology which minimizes error, disposes of irregularities can reduce production time. In this study, a refrigerator was determined measurements temperature difference ...

The aim of this paper is to study the influence of the shape of the temperature distribution on the thermoacoustic amplification in an annular thermoacoustic prime mover. An analytical model is presented and the acoustic field in the whole device is computed for an arbitrary temperature distribution. The obtained results demonstrate dependence of the thermoacoustic amplification not only on the...

Abstract In this paper, the design and analysis of 500 W thermoacoustic refrigerators for temperature difference 28 K using helium air are discussed. Helium is best working gas, but chosen to study possibility replacing future cost-effective refrigerator since it much cheaper than helium. Heat work flow equations The models optimized by normalizing parameters Rott’s linear theory. effect gas sp...

Abstract Most numerical research on thermoacoustic devices with a stack made of parallel plates has considered rectangular form for the plate. However, variety plate shapes can improve heat transfer and performance stack. In this paper, 2D model based computational fluid dynamics (CFD) analysis is used to examine efficiency couples using diversity surfaces. For investigation, flat others profil...