CFD analysis of radiation impact on Stirling engine performance

Ben‐Mansour, Rached; Abuelyamen, Ahmed; Mokheimer, Esmail M. A.

doi:10.1016/j.enconman.2017.09.056

Cited by 27 publications

(10 citation statements)

References 36 publications

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“…Consequently, neither viscous heating nor gravity factors were considered in this study. The ideal gas formula is employed to establish the value of pressure since the pressure difference produced by gas flow within the engine is only a minor proportion of the total amount of pressure [28].…”

Section: Governing Equationsmentioning

confidence: 99%

Heat Transfer Enhancement in Stirling Engines Using Fins with Different Configurations and Air Flow

Gomma

Alsit

Dol

2022

CFDL

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The Stirling engine, in comparison to other classical engines, is an external enclosed heat engine cycle with extraordinary theoretical efficiency and minimal emissions. However, when combined with a minor heat source, the productivity of the Stirling engine suffers. Thus, this study emphasizes research on improving engine performance using heat transfer. A simulation was done using CFD analysis in ANSYS Fluent to enhance heat transfer using different types of fins, air blowers, and roughness. κ-ω SST model was used as the turbulence model to capture the heat transfer behavior near and away from the surface. All runs showed a higher heat transfer rate per unit area than the no finned case. Increasing the number of fins reduces the heat transfer by 10 %, Applying this solution would cost more since more material is needed to decrease the gap between fins. When doubling the length of the fin, the heat transfer of the circular design was reduced by 1%, the pinned design by 5%, and the squared design by 30%. The addition of fins reduced the flow of heat to the cold end and kept the temperature near the cold end below 100°C. Increasing the roughness resulted in a small increase in heat flow. Comparing the laminar flow to the transitional flow, the transitional flow increases the heat transfer by 1000%.

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Section: Governing Equationsmentioning

confidence: 99%

Heat Transfer Enhancement in Stirling Engines Using Fins with Different Configurations and Air Flow

Gomma

Alsit

Dol

2022

CFDL

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“…There are very few computational works in the literature that fully provides complete information about geometry and boundary conditions that is needed to design geometry for the CFD simulations. The computational analysis from Ben-Mansour et al, [14] is referred for the initial geometry of Stirling engine model since it provides a concise information needed for the CFD simulation.…”

Section: Modelling and Geometrymentioning

confidence: 99%

Heat Transfer Enhancement of Biomass Based Stirling Engine

Rahman

Saadon²,

Man³

2022

ARFMTS

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Stirling engine as an external combustion engine with high efficiencies and able to use any types of heat source is the best candidate to recover waste heat of the exhausted gas by converting it into power. Thus, in this study Stirling engine was introduced to evaluate the possibility of recovering waste heat from biomass to produce power. For this reason, Computational Fluid Dynamic (CFD) simulation test was performed to design an initial computational model of Stirling engine for low temperature heat waste recovery. The CFD model was validated with the experiment model and shows 6.11% of average deviation. This result proves that the computational model can be further used to evaluate the performance of Stirling engine as waste heat recovery of biomass-based industrial boilers for low-grade temperature heat source.

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“…There are very few computational works in the literature that fully provides a complete information about geometry and boundary conditions that is needed to design geometry for the CFD simulations. The computational analysis from Ben-Mansour et al, [13] provides a concise information needed for the CFD simulation. Hence, his paper will be referred for the initial geometry of model of Stirling engine before adding the flue gas and heater chamber at the tubular heater of the engine.…”

Section: Modelling and Geometrymentioning

confidence: 99%

“…In the study about the effect of radiation to the Stirling engine performance carried out by Ben-Mansour et al, [13] stated that from the validation result, the power output of the system is between 30W to 45W. The result obtained for every different rotational speed (rpm).…”

Section: Introductionmentioning

confidence: 99%

Waste Heat Recovery of Biomass Based Industrial Boilers by Using Stirling Engine

Rahman

Saadon

Man

2021

ARFMTS

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Industrial boilers by using biomass for electricity generation have received significant attention recent years. However, during the process, a significant fraction of thermal energy is often lost to the environment as flue gas. The exhaust flue gas heat loss which ranges from 150-180°C (423.15-453.15K) has led to discovery of importance of recovering the waste heat of the flue gas to overcome the reliance on fossil fuel. Stirling engine as an external combustion engine with high efficiencies and able to use any types of heat source is the best candidate to recover waste heat of the exhausted gas by converting it into power. Thus, in this study Stirling engine was introduced in order to evaluate the possibility of recovering waste heat from industrial boilers to produce power. For this reason, Computational Fluid Dynamic (CFD) simulation test was performed to design an initial computational model of Stirling engine for low temperature heat waste recovery. The CFD model was validated with the experiment model and shows 4.3% of deviation. The validated model then connected to a lower temperature. It shows that when the heat source is 400K, the work done by the engine is 8.4J compared to when heat source 773K the work done is 17.0 J. The computational model can be used to evaluate the performance of Stirling engine as waste heat recovery of biomass-based industrial boilers for low-grade temperature heat source.

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CFD analysis of radiation impact on Stirling engine performance

Cited by 27 publications

References 36 publications

Heat Transfer Enhancement in Stirling Engines Using Fins with Different Configurations and Air Flow

Heat Transfer Enhancement in Stirling Engines Using Fins with Different Configurations and Air Flow

Heat Transfer Enhancement of Biomass Based Stirling Engine

Waste Heat Recovery of Biomass Based Industrial Boilers by Using Stirling Engine

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