Experimental and theoretical investigation of Stirling engine heater: Parametrical optimization

Gheith, Ramla; Hachem, Houda; Aloui, Fethi; Nasrallah, Sassi Ben

doi:10.1016/j.enconman.2015.07.063

Cited by 35 publications

(11 citation statements)

References 24 publications

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“…At the same time, one can not speak of a particular type of solar collector as the best for the multitude of systems and applications in which they can be used. Factors such as system temperature, working temperature, geographic position, solar radiation of the place, type of installation, system lifetime; all of these must be well identified and defined to be able to dimension and choose the type of solar collector that is most promising for what we want to install [15][16][17][18][19][20][21]. The Fresnel lens used is imaging type (reproducing the Sun's image on the receiver, i.e.…”

Section: Methodsmentioning

confidence: 99%

System for Supplying Electric Energy With Zero Co2 Emissions

Ilie¹,

Tatai²,

Sorândaru³

et al. 2017

Safety Engineering

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Section: Methodsmentioning

confidence: 99%

System for Supplying Electric Energy With Zero Co2 Emissions

Ilie¹,

Tatai²,

Sorândaru³

et al. 2017

Safety Engineering

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“…It is used for the task of optimization [6 -13], exploration of new design or concept [14 -19] as well as parametric study of Stirling engines [5,20,21]. Experimental study focuses on validation and performance testing of existing or new Stirling engine design [9,16].…”

Section: Introductionmentioning

confidence: 99%

Experimental comparison of sinusoidal motion and non-sinusoidal motion of rise-dwell-fall-dwell in a Stirling engine

Wong¹,

Goh²

2020

JMES

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The Stirling engine is deemed to play a role in the near future of power generation. However, there is a large performance difference between the real and ideal Stirling engine. The use of sinusoidal motion for both displacer and piston in current applications is one of the reasons for this difference as it limits heat transfer. This paper investigated the use of non-sinusoidal rise-dwell-fall-dwell (RDFD) motion on both displacer and piston to improve the performance of a real Stirling engine and compared it to the conventional sinusoidal motion crankshaft driven Stirling engine. A gamma configuration Stirling engine test rig with a data acquisition system was constructed for this investigation. Among the four flywheels with each specifically designed cam profile tested, one was with sinusoidal motion while the remaining three were non-sinusoidal for comparison. The use of non-sinusoidal RDFD cam with 135° displacer dwell improved more than 36% thermal efficiency over sinusoidal motion crankshaft Stirling engine.

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“…Because of the increasing interest on the Stirling engine technology, several studies have been performed on different configurations in order to evaluate their performance, both experimentally [3,4] and numerically. In the numerical studies, two main approaches are found.…”

Section: Introductionmentioning

confidence: 99%

A Porous Media Numerical Approach for the Simulation of Stirling Engine Regenerators

Faruoli¹,

Viggiano²,

Magi³

2019

IJES

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The Stirling engine design process is mostly focused on the study of the engine regenerator, whose thermal efficiency is strictly related to the global efficiency of the engine. The present work aims to setup a numerical model by means of OpenFOAM libraries to simulate the engine regenerator as a porous media, in order to reduce the overall computational cost of the simulations and to obtain a suitable model that can be eventually used for topological optimization. The solid part of the numerical domain, i.e. the stoked wires, is represented as a zone with the highest porosity, whereas intermediate areas are defined in order to simulate the boundary layers in proximity of the walls. The presence of porous media is modelled by introducing a Darcy-type pressure drop in the momentum equation, whereas in the energy equation the thermal properties of the solid, intermediate and fluid materials are modelled by means of a linear function of the porosity value in the domain. After a process of tuning, the results obtained with this model are reported for different flow conditions in terms of both aerodynamic and thermal performances, thus showing a good agreement with the numerical results obtained with a more classical CFD methodology.

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Experimental and theoretical investigation of Stirling engine heater: Parametrical optimization

Cited by 35 publications

References 24 publications

System for Supplying Electric Energy With Zero Co2 Emissions

System for Supplying Electric Energy With Zero Co2 Emissions

Experimental comparison of sinusoidal motion and non-sinusoidal motion of rise-dwell-fall-dwell in a Stirling engine

A Porous Media Numerical Approach for the Simulation of Stirling Engine Regenerators

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