Experimental investigations of a gamma Stirling engine

Gheith, Ramla; Aloui, Fethi; Tazerout, Mohand; Nasrallah, Sassi Ben

doi:10.1002/er.1872

Cited by 24 publications

(21 citation statements)

References 11 publications

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“…According to the experimental investigations of the Viebach prototype, presented in reference [9], the Stirling engine can operate without an initial filling pressure and can deliver around 69.84 W of brake power. However, it is not possible to start the engine at an atmospheric pressure.…”

Section: Volumes Pressures and Temperatures In Different Spacesmentioning

confidence: 99%

“…Gheith et al [9] has experimented a Gamma type Stirling engine of 500 W of mechanical shaft power and 600 rpm of maximal revolutions per minute. They studied the effect of initial filling pressure, engine speed, and cooling water flow rates on the engine performances.…”

Section: Introductionmentioning

confidence: 99%

“…This study is a global modeling includes all parameters that decrease the engine's brake power and considering the most important phenomenon recorded in Stirling engine (Thermodynamic phenomenon, Thermal and mechanical losses). In our previous studies [9,12,26,27] an experimental characterization of a Gamma Stirling setup is made. In this paper, Quasi-steady model proposed in 1987 by Urieli [5] was reconsidered.…”

Section: Introductionmentioning

confidence: 99%

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Numerical characterization of a γ-Stirling engine considering losses and interaction between functioning parameters

Hachem

Gheith²,

Aloui³

et al. 2015

Energy Conversion and Management

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Section: Volumes Pressures and Temperatures In Different Spacesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical characterization of a γ-Stirling engine considering losses and interaction between functioning parameters

Hachem

Gheith²,

Aloui³

et al. 2015

Energy Conversion and Management

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“…Sin embargo, son pocas las publicaciones que se refieren específicamente al estudio teórico-experimental de los motores Stirling tipo  y del motor Robinson (Gheith et al, 2012;Miranda et al, 2012b). Estas últimas dos configuraciones como se sabe tienen la ventaja de operar entre la menor diferencia de temperaturas (Cheng y Yang, 2012;Ferreira et al, 2012;Gheith et al, 2012) lo que los hace atractivos para su aplicación en la recuperación de calor residual de los procesos térmicos.…”

Section: Introductionunclassified

Optimización de la Eficiencia Térmica de un Motor Robinson Aplicando el Modelo Senft-Schmidt-Petrescu

Carvajal¹,

Polupan²,

Jarquin³

et al. 2013

Inf. tecnol.

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ResumenSe presentan los resultados de la optimización de la eficiencia térmica de un motor Robinson aplicando el modelo Senft-Schmidt-Petrescu. Este se fundamenta en el acoplamiento de los modelos de Senft-Schmidt y de Petrescu, usados para el cálculo de la potencia en motores de ciclo Stirling. El modelo propuesto involucra tanto parámetros termodinámicos como geométricos y permite estimar en su conjunto las pérdidas de presión por fricción y por estrangulamiento del flujo. Tomando como base los datos del prototipo de un motor Robinson de aproximadamente 2 W de potencia, se analizaron teóricamente sus parámetros principales y se optimizó su eficiencia térmica en función de la mínima generación de entropía. Después de realizada la optimización, la eficiencia térmica del motor aumentó a más del doble. Se concluye que el modelo Senft-Schmidt-Petrescu propuesto puede ser útil en el análisis y rediseño de motores Robinson. Palabras clave: optimización, eficiencia térmica, modelo matemático, motor Robinson Optimization of the Thermal Efficiency of a Robinson Engine Applying the Senft-Schmidt-Petrescu Model AbstractThe results of the optimization of the thermal efficiency of a Robinson engine applying the Senft-PetrescuSchmidt model are presented. This is based on the coupling of the Senft-Schmidt and the Petrescu models, used for the calculation of power in Stirling cycle engines. The proposed model involves both thermodynamic and geometric parameters and allows estimating the overall pressure losses by friction and by flow throttling. Based on data from a prototype of a Robinson engine of about 2 W of power, a theoretical analysis of its main parameters and the optimization of thermal efficiency, based on the minimum entropy generation, were performed. After the optimization was done, the thermal efficiency of the engine increased to more than the double. It is concluded that the proposed Senft-Schmidt-Petrescu model may be useful in the analysis and redesign of Robinson engines.

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“…Figure 1a). The geometric properties of this Stirling engine are presented in previous studies of Gheith et al [23][24][25][26], with some experimental investigations. In particular, the influence of initial filling pressure, engine speed, cooling water flow rates and heating temperature on the engine performances (brake power and efficiency) has been highlighted.…”

Section: Geometries and Working Conditionsmentioning

confidence: 99%

Comparison Based on Exergetic Analyses of Two Hot Air Engines: A Gamma Type Stirling Engine and an Open Joule Cycle Ericsson Engine

Hachem

Creyx

Gheith

et al. 2015

Entropy

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Abstract:In this paper, a comparison of exergetic models between two hot air engines (a Gamma type Stirling prototype having a maximum output mechanical power of 500 W and an Ericsson hot air engine with a maximum power of 300 W) is made. Referring to previous energetic analyses, exergetic models are set up in order to quantify the exergy destruction and efficiencies in each type of engine. The repartition of the exergy fluxes in each part of the two engines are determined and represented in Sankey diagrams, using dimensionless exergy fluxes. The results show a similar proportion in both engines of destroyed exergy compared to the exergy flux from the hot source. The compression cylinders generate the highest exergy destruction, whereas the expansion cylinders generate the lowest one. The regenerator of the Stirling engine increases the exergy resource at the inlet of the expansion cylinder, which might be also set up in the Ericsson engine, using a preheater between the exhaust air and the compressed air transferred to the hot heat exchanger. OPEN ACCESSEntropy 2015, 17 7332

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Experimental investigations of a gamma Stirling engine

Cited by 24 publications

References 11 publications

Numerical characterization of a γ-Stirling engine considering losses and interaction between functioning parameters

Numerical characterization of a γ-Stirling engine considering losses and interaction between functioning parameters

Optimización de la Eficiencia Térmica de un Motor Robinson Aplicando el Modelo Senft-Schmidt-Petrescu

Comparison Based on Exergetic Analyses of Two Hot Air Engines: A Gamma Type Stirling Engine and an Open Joule Cycle Ericsson Engine

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