Design of a thermoacoustic heat engine for low temperature waste heat recovery in food manufacturing

Mumith, Jurriath Azmathi; Makatsoris, Charalampos; Karayiannis, Tassos G.

doi:10.1016/j.applthermaleng.2014.01.042

Cited by 52 publications

(19 citation statements)

References 16 publications

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“…For example, thermoacoustic heat engine [11,12], refrigerators [13], gas mixture separators [14], electrical energy generators [15], heat exchangers [16], imaging systems for tumor detection [17], and breast cancer detection systems [18].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, thermoacoustic related research topics have caught the attention of numerous researchers over the past few decades [2][3][4][5][6][7]. The temperature gradient, required to run a thermoacoustic system, can be developed using any low potential sources of energy; for example, solar energy [8], waste heat from automotive engine [9], and industrial waste heat [10]. A wide variety of combustible fuels can also be used to run a thermoacoustic system.…”

Section: Introductionmentioning

confidence: 99%

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Influence of magnetic field on the periodically oscillating fluid inside a porous medium attached to a thick solid plate

Islam

Biglarbegian

Mahmud

2016

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of magnetic field on the periodically oscillating fluid inside a porous medium attached to a thick solid plate

Islam

Biglarbegian

Mahmud

2016

International Journal of Heat and Mass Transfer

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“…Thermoacoustic engines have fundamental advantages such as low maintenance costs, simplicity, and they are able to achieve good efficiency. Potential applications of thermoacoustic engines include refrigeration with low environmental impact [3], heat pumps [4] or engines [5] enabling to recover waste heat, as well as solar powered thermoacoustic engines [6,7].…”

Section: Introductionmentioning

confidence: 99%

Parameter estimation for the characterization of thermoacoustic stacks and regenerators

Guédra¹,

Bannwart²,

Pénelet³

et al. 2015

Applied Thermal Engineering

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Highlights• A model for the propagation of acoustic waves in a thermoacoustic core is proposed • Geometrical and thermal parameters are adjusted by using an inverse method • Parameters are estimated for a ceramic catalyst, a stack of grids and a carbon foam• The values for geometrical parameters are close to manufacturers' data • The heat diffusion length is higher for the stainless-steel grids stack Abstract This paper deals with the in-situ characterization of open-cell porous materials that might be used as a so-called stack (or regenerator) in a thermoacoustic engine. More precisely, the manuscript presents an inverse method aiming at estimating geometrical and thermal properties of various samples of porous media surrounded by heat exchangers and connected to a thermal buffer tube to form a ThermoAcoustic Core (TAC). This estimation is realized from acoustic measurements, and it is expressed as a minimization problem applied to the squared norm of the difference between experimental and theoretical transfer matrices of the TAC. Experimental data, obtained for different stacks (ceramic catalyst, pile of stainless steel wire meshes, carbon and metallic foams) under various heating conditions, are used in order to fit the theoretical forward model by adjusting geometrical properties of the sample and heat exchange coefficients. Common geometrical properties (porosity and average pore's radius) obtained with the present method are consistent with available data from manufacturers. Moreover, this method allows to estimate the tortuosity of the material which is not given by manufacturers. Estimation of heat coefficients (and their variations with heating) provides global in-formation about anisotropic heat diffusion through the porous material employed as a thermoacoustic stack submitted to a temperature gradient. Among the four characterized samples, it appears that the carbon foam allows to get the highest temperature gradients

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“…A large number of studies have demonstrated that the thermoacoustic technologies have the benefits of being both low maintenance due to the lack of moving parts and can be successively enlarged and accumulated, 7,14 although such an engine would be powered by the low-temperature waste heat sources, such as biomass burning. 11,15,16 Therefore, these technologies might be suitable to meet the energy requirements of people living in rural communities where there is no chance of accessing the electricity grid. The cascade thermoacoustic engine is one of the challenging configurations because of its simplicity and relatively high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Design and experimental evaluation of a travelling-wave thermoacoustic refrigerator driven by a cascade thermoacoustic engine

Dhuchakallaya

Saechan

2017

Int J Energy Res

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Summary A travelling‐wave thermoacoustic refrigerator driven by a cascade thermoacoustic engine is evaluated experimentally in this paper. A prototype is developed under the constraint of a low‐cost and less complicated device. In order to reduce the total budget, commercial materials and standard parts are selected, and air at atmospheric pressure is used as working fluid in the system. The thermoacoustic coupled engine‐refrigerator system consists of 1 standing‐wave unit, 1 travelling‐wave unit, and 1 travelling‐wave refrigerator arranged in a linear configuration. A resonator‐tube is connected at each end of the thermoacoustic core. The effects of the length and hydraulic radius of the regenerator in the refrigerator on the cooling performance are investigated at different levels of input power. In the experimental results, the maximum temperature difference of 17.6°C was realised at the no‐load condition. The maximum coefficient of performance relative to Carnot (COPR) of 2.4% was accomplished at the cooling load of 13 W.

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Design of a thermoacoustic heat engine for low temperature waste heat recovery in food manufacturing

Cited by 52 publications

References 16 publications

Influence of magnetic field on the periodically oscillating fluid inside a porous medium attached to a thick solid plate

Influence of magnetic field on the periodically oscillating fluid inside a porous medium attached to a thick solid plate

Parameter estimation for the characterization of thermoacoustic stacks and regenerators

Design and experimental evaluation of a travelling-wave thermoacoustic refrigerator driven by a cascade thermoacoustic engine

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