Dynamic simulation of an original Joule cycle liquid pistons hot air Ericsson engine

Ngangué, Max Ndame; Stouffs, Pascal

doi:10.1016/j.energy.2019.116293

Cited by 8 publications

(7 citation statements)

References 27 publications

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“…A 400 Nm torque could be developed in the flywheel. (Ngangué & Stouffs, 2020) Test bed using solar energy…”

Section: Electricity Generation Using An Electric Heatermentioning

confidence: 99%

“…Compared to Stirling engines an Ericsson engine has valves to isolate cylinders for higher volumes and pressure amplitudes. A modification of an Ericsson engine with hybrid solid–liquid pistons (Ngangué & Stouffs, 2020), is in Figure 16.…”

Section: Variants Of Lpsesmentioning

confidence: 99%

“…The liquid oscillations drove a solid piston crankshaft located beneath the displacer U‐tubes to drive a flywheel. The dynamic model of this concept predicted an inverse relationship between efficiency and rotation speed (Ngangué & Stouffs, 2020).…”

Section: Variants Of Lpsesmentioning

confidence: 99%

“…In such experimentally validated numerical method (Hashem, 2016), a combined LPSE cooling unit was split into several control volumes to solve the developed ODEs deducing cyclic pressure and temperature variations. In another approach of a hybrid solid–liquid engine, a classical intra‐cycle numerical model of a Ericsson engine was coupled with the dynamic equations of liquid pistons to study the dependence of variables on the crankshaft angle (Ngangué & Stouffs, 2020). In a basic analysis of a TFO with a tuning column, the experimentally validated numerical model of the liquid, vapor, and interface was developed including all losses (Özdemir & Özgüç, 2003).…”

Section: Modeling and Analyses Techniquesmentioning

confidence: 99%

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Viability of low‐grade heat conversion using liquid piston Stirling engines

Mazhar,

Shen,

Liu

2024

WIREs Energy & Environment

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Liquid piston Stirling engines (LPSEs) are low‐cost, simple, maintenance‐free, and flexible external combustion engines with the potential to operate from low‐grade heat sources. This study reviews the major components, operations, and variants of LPSEs along with the mathematical models to assess their performance, which have been developed since the inception of LPSEs. Consequently, the technical feasibility of LPSEs in different applications is deduced from this complete systematic review, especially useful for both theoretical and applied researchers. The operation is based on a four‐stage Stirling cycle with most engines having three main components as per the findings of this study: the displacer columns, the regenerator, and tuning columns. The two main variants categorized by this study are the dry operating fluidyne and the wet operating thermofluidic. The accurate analyses of these engines are mostly within the spheres of experimental and numerical techniques since analytical mathematical models are difficult to develop owing to the complexity of the operating thermo‐physics. Pumping, cooling, and the direct generation of electricity are frequent applications of these engines reported in the literature. However, since their inception in 1969, these engines are yet to be commercialized owing to their low energy efficiency, power density, and reliability. The findings of this research conclude that LPSEs are essential for environment‐friendly pumping applications using low‐grade heat, especially in the irrigation sector of remote regions with limited access to electricity grids. Additionally, by replacing the electricity‐consuming status quo pumps, LPSEs ensure sustainability with minimal greenhouse gas emissions.This article is categorized under: Energy and Power Systems > Energy Management Sustainable Development > Energy‐Water‐Food Nexus Energy and Power Systems > Distributed Generation Sustainable Development > Goals

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“…A 400 Nm torque could be developed in the flywheel. (Ngangué & Stouffs, 2020) Test bed using solar energy…”

Section: Electricity Generation Using An Electric Heatermentioning

confidence: 99%

Section: Variants Of Lpsesmentioning

confidence: 99%

Section: Variants Of Lpsesmentioning

confidence: 99%

Section: Modeling and Analyses Techniquesmentioning

confidence: 99%

See 2 more Smart Citations

Viability of low‐grade heat conversion using liquid piston Stirling engines

Mazhar,

Shen,

Liu

2024

WIREs Energy & Environment

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“…The first configuration of a liquid piston Ericsson engine has been proposed by Ndamé [27] where the engine is composed of two U-tubes partially filled by water. The spaces between the water level and the cylinder head delimit the compression rooms in both legs of the first U-tube, whereas they delimit the expansion spaces in both legs of the other Utube (Fig.…”

Section: Ndamé's Hybrid Liquid-solid Piston Ericsson Engine 31mentioning

confidence: 99%

A variant of the Fluidyne: the liquid piston ERICSSON engine

2021

Self Cite

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A special configuration of Stirling liquid piston engine, known as Fluidyne, was invented fifty years ago and many works have been devoted to it since then. A variant of the Fluidyne is presented, in which the two ends of the U-tube containing the liquid piston are closed by valves, so that the system obtained belongs to the family of Ericsson engines rather than to the family of Stirling engines. This type of low-tech system is considered to be suitable for the production of low-power mechanical energy (up to 1… kW), for example for pumping or to drive an electric generator from renewable primary energy conversion (solar, biomass, hot gaseous effluents, ). In the system considered, the working fluid of the Ericsson engine is air in open cycle. Different configurations are proposed for the extraction of mechanical energy. The preliminary design of a first demonstrator is presented. Results of a dynamic “intracycle” model of this liquid piston Ericsson engine are presented in the case of the coupling with a linear generator. The model allows to determine the frequency of operation of the engine, the instantaneous liquid piston position and the instantaneous working gas properties, so that the global performance of the engine can be predicted.

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