Results 181 to 190 of about 2,806 (227)

A miniature thermoacoustic stirling engine

Energy Conversion and Management, 2008
A miniature thermoacoustic stirling engine was simulated and designed, having overall size of length 0.65 m and height of 0.22 m. The acoustic field generated in this miniature system has been described and analyzed. Some efforts had been paid to coupling and matching, and a miniature thermoacoustic engine and some extra experimental components have ...
Gang Zhou, Qing Li, Zheng Yu Li, Qiang Li   +3 more
openaire   +1 more source

Solar/heat-driven thermoacoustic engine

The Journal of the Acoustical Society of America, 1998
With its abundance and cleanliness, solar energy has been harnessed to generate power using various techniques. A thermoacoustic engine is described which was built, instrumented, and tested to demonstrate use of solar power to generate acoustic power.
Reh-lin Chen, Steven L. Garrett
openaire   +1 more source

A thermoacoustic Stirling heat engine

Nature, 1999
Electrical and mechanical power, together with other forms of useful work, are generated worldwide at a rate of about 1012 watts, mostly using heat engines. The efficiency of such engines is limited by the laws of thermodynamics and by practical considerations such as the cost of building and operating them.
S. Backhaus, G. W. Swift
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Radial wave thermoacoustic engines

The Journal of the Acoustical Society of America, 1992
Thermoacoustic heat engines are used to produce sound from heat and to transport heat using sound. Most previous work has concentrated on engines in plane-wave resonators. This paper is about the analysis of engines in radial mode cylindrical resonators.
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A high performance thermoacoustic engine

Journal of Applied Physics, 2011
In thermoacoustic systems heat is converted into acoustic energy and vice versa. These systems use inert gases as working medium and have no moving parts which makes the thermoacoustic technology a serious alternative to produce mechanical or electrical power, cooling power, and heating in a sustainable and environmentally friendly way.
M. E. H. Tijani, S. Spoelstra
openaire   +1 more source

Miniature traveling wave thermoacoustic engine.

The Journal of the Acoustical Society of America, 2009
Five high frequency annular thermoacoustic traveling wave devices have been developed and characterized. A 1.27 cm bore diam 2 kHz engine was optimized, increasing its maximum acoustic output from 140 to 167 dB. A new 1.60 cm bore diam 2 kHz engine has been assembled with the expectation of even higher acoustical power output because power is ...
Ivan A. Rodriguez, Orest G. Symko
openaire   +1 more source

Entrainment of two thermoacoustic engines

Journal of the Acoustical Society of America, 2016
In order to build more powerful sources of sound for energy conversion, the synchronization of two thermoacoustic heat engines has been studied. Experiments were performed on engines in the acoustic frequency range of 2.6 kHz and also on very small engines in the ultrasonic range of 24 kHz.
Orest G. Symko, Myra Flitcroft, Brenna Gillman, Ivan Rodriguez, Cedric C. Wilson   +4 more
openaire   +1 more source

Nonlinear processes in thermoacoustic engines

The Journal of the Acoustical Society of America, 1994
In the first part of the paper it is shown how, on the basis of a different form of the energy equation, a more compact derivation of the Rott theory of thermoacoustic effects [N. Rott, Z. Angew. Math. Phys. 20, 230–243 (1969)] can be given. In the second part, a weakly nonlinear theory is built starting from the same formulation and the steady-state ...
A. Prosperetti, M. Watanabe
openaire   +1 more source

Resonator coiling in thermoacoustic engines

The Journal of the Acoustical Society of America, 1995
Coiling the resonator of a thermoacoustic engine is one way to try to minimize the engine’s size. However, flow in bent pipes is known to alter the fluid flow pattern because of centrifugal forces. Theory and measurements will be presented on the energy dissipation caused by oscillating flow in curved pipes.
Jeffrey R. Olson, Gregory W. Swift
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A thermoacoustic-Stirling heat engine: Detailed study

The Journal of the Acoustical Society of America, 2000
A new type of thermoacoustic engine based on traveling waves and ideally reversible heat transfer is described. Measurements and analysis of its performance are presented. This new engine outperforms previous thermoacoustic engines, which are based on standing waves and intrinsically irreversible heat transfer, by more than 50%.
, Backhaus, , Swift
openaire   +2 more sources