Influence of working fluid on the performance of a standing-wave thermoacoustic prime mover

Cryogenics ◽  
2011 ◽  
Vol 51 (9) ◽  
pp. 559-561 ◽  
Author(s):  
X.H. Hao ◽  
Y.L. Ju ◽  
Upendra Behera ◽  
S. Kasthurirengan
Keyword(s):  
Standing Wave ◽  
Working Fluid ◽  
Prime Mover

scholarly journals The Influence of Stack Position and Acoustic Frequency on the Performance of Thermoacoustic Refrigerator with the Standing Wave

2017 ◽  
Vol 38 (4) ◽  
pp. 89-107 ◽  
Author(s):  
Jakub Kajurek ◽  
Artur Rusowicz ◽  
Andrzej Grzebielec
Keyword(s):  
Standing Wave ◽  
Temperature Difference ◽  
Heat Exchangers ◽  
Acoustic Power ◽  
Working Fluid ◽  
Parallel Plates ◽  
Acoustic Frequency ◽  
Plate Spacing ◽  
Resonance Frequencies ◽  
Thermoacoustic Refrigerator

Abstract Thermoacoustic refrigerator uses acoustic power to transport heat from a low-temperature source to a high-temperature source. The increasing interest in thermoacoustic technology is caused due to its simplicity, reliability as well as application of environmentally friendly working fluids. A typical thermoacoustic refrigerator consists of a resonator, a stack of parallel plates, two heat exchangers and a source of acoustic wave. The article presents the influence of the stack position in the resonance tube and the acoustic frequency on the performance of thermoacoustic refrigerator with a standing wave driven by a loudspeaker, which is measured in terms of the temperature difference between the stack edges. The results from experiments, conducted for the stack with the plate spacing 0.3 mm and the length 50 mm, acoustic frequencies varying between 100 and 400 Hz and air as a working fluid are consistent with the theory presented in this paper. The experiments confirmed that the temperature difference for the stack with determined plate spacing depends on the acoustic frequency and the stack position. The maximum values were achieved for resonance frequencies and the stack position between the pressure and velocity node.

Influence of operational parameters on performance of twin thermoacoustic prime mover – CFD studies

2016 ◽  
Vol 33 (3) ◽  
Author(s):  
Jabbar P ◽  
Hariharan N.M ◽  
Palani Sivashanmugam ◽  
S. Kasthurirengan
Keyword(s):  
Temperature Gradient ◽  
Design Methodology ◽  
Cfd Simulation ◽  
Working Fluid ◽  
Geometrical Parameters ◽  
Pressure Amplitude ◽  
Prime Mover ◽  
Operational Parameters ◽  
Fluid Medium ◽  
Wide Range

Purpose The present investigation deals with the analysis of the performance of twin thermoacoustic prime mover (TAPM) which are measured in terms of frequency and pressure amplitude by varying the parameters such as temperature gradient along the length of stack and the operating pressures of fluid medium argon using CFD simulation. With the help of CFD researchers and Engineers can evaluate the performance of a wide range of thermoacoustic systems on the computer without the time, expense, and disruption required to make actual changes onsite (stack) which is tedious to fabricate. Design/methodology/approach For the present simulation, the operating pressures of argon such as 1bar, 3bar and 5bar, and the temperature gradient is varied from 600K to 1400K with the regular intervals of each 200K. The geometry of twin TAPM is created using GAMBIT processor, and the simulation is carried out using FLUENT. The geometrical parameters of twin TAPM are kept constant throughout the simulation. The results for frequency and pressure amplitude obtained from the CFD simulation of twin TAPM for various temperature gradient and operating pressures are analysed and reported. Findings The computational results of twin thermoacoustic prime mover shows an increase in pressure amplitude with an increase in the temperature gradient and also it increases with an increase in operating pressures of the fluid medium. The parameter operating pressures of the working fluid medium and the stack hot end temperature has no significant effect on the output, frequency. Originality/value Though several experimental works had been published based on the twin thermoacoustic prime mover, an attempt has been made in the present investigation for the first time to estimate the performance of twin thermoacoustic prime mover using CFD package (ANSYS-FLUENT) by varying temperature gradient. The temperature gradient and operating pressures were varied and the performance of twin thermoacoustic prime mover was measured in terms of frequency and pressure amplitude.

Optimum packing factor of the stack in a standing-wave thermoacoustic prime mover

2002 ◽  
Vol 26 (8) ◽  
pp. 729-735 ◽  
Author(s):  
Limin Qiu ◽  
Guobang Chen ◽  
Ning Jiang
Keyword(s):  
Standing Wave ◽  
Prime Mover ◽  
Packing Factor

scholarly journals Influence of resonator length on the performance of standing wave thermoacoustic prime mover

2016 ◽  
Author(s):  
Wahyu Nur Achmadin ◽  
Ikhsan Setiawan ◽  
Agung Bambang Setio Utomo ◽  
Makoto Nohtomi
Keyword(s):  
Standing Wave ◽  
Prime Mover ◽  
Resonator Length

Optimization of binary gas mixture as working fluid for the thermoacoustic prime mover

2015 ◽  
Vol 40 (1) ◽  
pp. 167
Author(s):  
B.V. Kamble ◽  
B.T. Kuzhiveli ◽  
S. Kasthurirengan ◽  
U. Behera
Keyword(s):  
Working Fluid ◽  
Gas Mixture ◽  
Prime Mover ◽  
Binary Gas Mixture

Relation between Acoustic Impedance and Sound Intensity Amplification in a Stack of Standing-Wave Thermoacoustic Prime Mover

2012 ◽  
Vol 51 ◽  
pp. 07GE02 ◽  
Author(s):  
Kazuki Sahashi ◽  
Shin-ichi Sakamoto ◽  
Kentaro Kuroda ◽  
Yoshiaki Watanabe
Keyword(s):  
Standing Wave ◽  
Acoustic Impedance ◽  
Sound Intensity ◽  
Prime Mover

Holographic-Interferometric and Thermoanemometric Study of a Thermoacoustic Prime Mover

2012 ◽  
Vol 29 (1) ◽  
pp. 59-66
Author(s):  
Z. Trávníček ◽  
A.-B. Wang ◽  
V. Lédl ◽  
T. Vít ◽  
Y.-C. Chen ◽  
...  
Keyword(s):  
Michelson Interferometer ◽  
Barometric Pressure ◽  
Proper Function ◽  
Working Fluid ◽  
Prime Mover ◽  
Hot Wire ◽  
Optical Setup ◽  
Quarter Wave Resonator ◽  
Wave Resonator ◽  
Quarter Wave

AbstractA thermoacoustic standing-wave prime mover with a quarter-wave resonator has been investigated experimentally. The working fluid is air at the barometric pressure. The holographic interferometry and hot-wire anemometry have been used. A special optical setup, based on a Michelson interferometer, has been developed and used. The setup exhibits a double sensitivity, in comparison with a common Mach-Zehnder holographic interferometer. The results have confirmed a proper function of the prime mover, and advantages of the present optical setup.

scholarly journals Experimental Study on a Standing Wave Thermoacoustic Prime Mover with Air Working Gas at Various Pressures

2016 ◽  
Vol 710 ◽  
pp. 012031 ◽  
Author(s):  
Ikhsan Setiawan ◽  
Wahyu N. Achmadin ◽  
Prastowo Murti ◽  
Makoto Nohtomi
Keyword(s):  
Experimental Study ◽  
Standing Wave ◽  
Prime Mover
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