Experimental investigation and optimal combustion control of untreated landfill gas via fuzzy logic rule knowledge based approach

Pawananont, Kanchit; Leephakpreeda, Thananchai

doi:10.1016/j.wasman.2020.12.022

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…In the search for sustainable energy sources, the synthesis of methane gas from urban solid residues emerges as a viable option. However, the synthesis gas (SYNGAS) derived from this source exhibits a low calorific capacity [12], which presents a challenge when considering its applicability in conventional internal combustion engines [13]. Despite this limitation, purified methane gas carries potential as a substitute for current fossil fuels in specific scenarios [14,15].…”

Section: Introductionmentioning

confidence: 99%

Deterministic Simulation of Surface Textures for the Piston Ring/Cylinder Liner System in a Free Piston Linear Engine

Luz,

Profito,

dos Santos

et al. 2024

Lubricants

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The use of synthesis gas (SYNGAS) from waste gasification has been pointed out as a key strategy to help the energy transition. However, SYNGAS’ low calorific power is considered a difficult obstacle to its technological use in internal combustion engines. To overcome this, a novel free-piston linear motor has been proposed to pave the way for the use of SYNGAS in the mobility sector. Surface texturing has vast potential to reduce friction losses in this system. This study utilizes a deterministic numerical model to investigate the mixed lubrication performance of a textured piston ring/cylinder liner conjunction in a free piston engine. The model considers the simultaneous solution of the lubrication and asperity contact problems at the roughness scale, including texturing features on the cylinder surface. The numerical model employs the Reynolds equation with mass-conserving cavitation to calculate the inter-asperity fluid pressure. The rough contact model utilizes the Hertz theory for elastic contact to calculate the contact pressure at each asperity between the piston liner surface and the admitted smooth and rigid ring surface. Surface texturing demonstrated remarkable effectiveness, particularly in the hydrodynamic lubrication regime, with a maximum friction reduction of 38.5% observed for an area coverage of 50%. This was accompanied by a notable shift in the transition from the boundary to the mixed lubrication regime. The textured surfaces exhibited consistent efficiency in reducing fluid pressure and shear stress as the coverage of the textured areas increased. The incorporation of dimples on these surfaces played a crucial role by augmenting the lubricant storage capacity while concurrently reducing the real shear and contact areas. This study offers valuable insights into the nuanced friction-reducing mechanisms of surface textures, illuminating their influence on the coefficient of friction and the formation of lubricant films across various lubrication regimes.

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Section: Introductionmentioning

confidence: 99%

Deterministic Simulation of Surface Textures for the Piston Ring/Cylinder Liner System in a Free Piston Linear Engine

Luz,

Profito,

dos Santos

et al. 2024

Lubricants

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“…Also, based on the proportional relationship between CH 4 in LFG and aromatic/aliphatic hydrocarbons, the production rates of benzene, toluene, ethylbenzene, and xylenes for Odense Nord and Glatved were estimated to be 272 and 73 kg per years, demonstrating harmlessness to human health. Pawananont and Leephakpreeda 43 conducted a parametric study for the combustion of LFG in terms of the LFG flow rate, the composition of CH 4 in landfill gas, O 2 concentration, and exhaust temperature and applied fuzzy logic rule knowledge for optimizing the control of LFG to maximize thermal efficiency and minimize NO x and CO gas emissions. Larson et al 44 investi-gated the effect of utilizing biopolymers originating from R. tropici on CH 4 production from municipal solid waste.…”

Section: Introductionmentioning

confidence: 99%

What is the best scenario to utilize landfill gas? Quantitative and qualitative approaches for technical, economic, and environmental feasibility

et al. 2022

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An adaptive fuzzy logic control of green tea fixation process based on image processing technology

Cheng

Liu

Song

et al. 2022

Biosystems Engineering

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Experimental investigation and optimal combustion control of untreated landfill gas via fuzzy logic rule knowledge based approach

Cited by 10 publications

References 21 publications

Deterministic Simulation of Surface Textures for the Piston Ring/Cylinder Liner System in a Free Piston Linear Engine

Deterministic Simulation of Surface Textures for the Piston Ring/Cylinder Liner System in a Free Piston Linear Engine

What is the best scenario to utilize landfill gas? Quantitative and qualitative approaches for technical, economic, and environmental feasibility

An adaptive fuzzy logic control of green tea fixation process based on image processing technology

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