Results 31 to 40 of about 2,216 (204)

Porous Cores in Small Thermoacoustic Devices for Building Applications

open access: yesEnergies, 2020
The thermoacoustic behavior of different typologies of porous cores is studied in this paper with the goal of finding the most suitable solution for small thermoacoustic devices, including solar driven air coolers and generators, which can be used in ...
Fabio Auriemma   +3 more
doaj   +1 more source

Measurement of Heat Flow Transmitted through a Stacked-Screen Regenerator of Thermoacoustic Engine

open access: yesApplied Sciences, 2017
A stacked-screen regenerator is a key component in a thermoacoustic Stirling engine. Therefore, the choice of suitable mesh screens is important in the engine design.
Shu Han Hsu, Tetsushi Biwa
doaj   +1 more source

A low-cost electricity generator for rural areas using a travelling-wave looped-tube thermoacoustic engine [PDF]

open access: yes, 2010
This article describes the construction and preliminary testing of a pre-prototype thermoacoustic electricity generator to test the concept of a low-cost device for application in remote or rural areas of developing countries.
Backhaus, S, Jaworski, AJ, Yu, Z
core   +1 more source

Comparative Performance of Thermoacoustic Heat Exchangers with Different Pore Geometries in Oscillatory Flow. Implementation of Experimental Techniques

open access: yesApplied Sciences, 2017
Heat exchangers (HXs) constitute key components of thermoacoustic devices and play an important role in determining the overall engine performance. In oscillatory flow conditions, however, standard heat transfer correlations for steady flows cannot be ...
Antonio Piccolo   +3 more
doaj   +1 more source

Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion chambers [PDF]

open access: yes, 2012
The objectives of this paper are the description of azimuthal instability modes found in annular combus- tion chambers using two numerical tools: (1) Large Eddy Simulation (LES) methods and (2) acoustic solv- ers.
Gicquel, Laurent Y.M.   +4 more
core   +4 more sources

Acoustic field improvement through adjustable resonator to enhance the performance of thermoacoustic-Stirling engine

open access: yesEnergy Reports, 2022
In this study, the simulation and experiment of a thermoacoustic Stirling heat engine (TASHE) with a phase-adjuster are demonstrated. The phase-adjuster is used as a tool to tune the acoustic field of the TASHE in order to maintain the high performance ...
Isares Dhuchakallaya   +2 more
doaj   +1 more source

Analysis of Tangential Combustion Instability Modes in a LOX/Kerosene Liquid Rocket Engine Based on OpenFOAM

open access: yesFrontiers in Energy Research, 2022
Self-excited high frequency combustion instability (HFCI) of first-order tangential (1T) mode was observed in a staged-combustion LOX/Kerosene liquid rocket engine numerically.
Kangkang Guo   +4 more
doaj   +1 more source

Lunar ISRU Energy Storage and Electricity Generation [PDF]

open access: yes, 2020
The survival of the astronauts and their equipment is the priority for any long-term exploration mission to the Moon. The provision of energy during the long lunar nights is a critical part of these missions.
Fereres, Sonia   +4 more
core   +2 more sources

Low-cost cascade thermoacoustic electric generator for energy harvesting

open access: yesInternational Journal of Thermofluids
The cascade thermoacoustic heat engine has garnered significant attention for its ability to convert various heat sources into acoustic power without the challenges of acoustic streaming. By integrating it with a commercial loudspeaker, it can be further
Isares Dhuchakallaya   +3 more
doaj   +1 more source

The myth of the high-efficiency external-combustion Stirling engine [PDF]

open access: yes, 2015
The reported discrepancy between theory and experiment for external combustion Stirling engines is explained by the addition of thermal resistance of the combustion gasses to the standard Carnot model. In these cases, the Stirling engine ideal efficiency
Riley, Paul Howard
core   +2 more sources

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