A computational study to analyze the effect of equivalence ratio and hydrogen volume fraction on the ultra-lean burning of the syngas-fueled HCCI engine

Ali, Kabbir; Amna, Riffat; Ali, Mohamed I. Hassan; Tsefaye, Tiebebe; Kim, Kiseong

doi:10.1016/j.ijhydene.2022.06.006

Cited by 21 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reduction in the density of air due to the thermal expansion of air molecules may lead to a reduction in the volumetric efficiency of air. For identifying a suitable design to deliver air at a certain temperature without compromising density, initially, four chambers were modeled and simulated using Ansys Fluent. , The results were studied at the end of the simulation, and a single model of the chamber was selected for manufacturing and mounted on the PCCI engine for testing with fuel samples using elevated temperature air. The initial modeling of the chamber is shown in Figure .…”

Section: Methodsmentioning

confidence: 99%

Experimental Study on Sustainability Involving the Pugh Matrix on Emission Values of High-Temperature Air in the Premixed Charged Compression Ignition Engine

Joshua,

Kandasamy,

Venkatesan

et al. 2023

ACS Omega

View full text Add to dashboard Cite

The main aim of the study was to reduce carbon emissions in the atmosphere using a novel Andropogon narudus (AN) biofuel using higher air temperatures and reducing the consumption of conventional fossil fuel (diesel). The use of a heat exchange chamber within the air intake manifold is a popular method to reduce hydrocarbon (HC) and carbon monoxide (CO) emissions during cold starts. A premixed charged compression ignition engine in the dual-fuel mode was used in this study with raw diesel, raw AN oil, AN70+D30, AN80+D20, AN80+D20 (35 °C), AN80+D20 (40 °C), and AN80+D20 (45 °C). A chamber was designed and analyzed to measure the exit temperature and density change and to determine the reduction in volumetric efficiency of the engine, using Ansys Fluent software. A sustainability assessment study was performed to understand the feasibility of the fuel and the design using the Pugh Matrix. The fuel AN80+D20 with an air temperature of 45 °C was found to be superior to all other fuels in terms of brake thermal efficiency, reaching at 32.1%. D100 used the least amount of energy, whereas AN80+D20 used the most. Engine HC emission was at the lowest (45.01 ppm) for AN80+D20 fuel at 45 °C air input and reached the highest (50 ppm) for AN100 fuel. With an air temperature of 45 °C, CO emission was at its lowest for AN80+D20 gasoline (0.018%) and was at its highest for AN100 (0.072%). Nitrogen oxide emissions were the highest for AN80+D20 fuel with an air temperature of 45 °C, with an air concentration of 1254 ppm, whereas they were the lowest for AN100 (900 ppm). CO 2 values were reduced, with D100 showing the lowest levels and AN100 showing the highest. The smoke emission was minimum for AN80+D20 fuel at 45 °C, with a smoke number of 15 compared to 33 for D100 fuel. As per the Pugh Matrix assessment, AN80+D20 with 35 °C air temperature had higher scores compared to all of the other fuel mixtures.

show abstract

Section: Methodsmentioning

confidence: 99%

Experimental Study on Sustainability Involving the Pugh Matrix on Emission Values of High-Temperature Air in the Premixed Charged Compression Ignition Engine

Joshua,

Kandasamy,

Venkatesan

et al. 2023

ACS Omega

View full text Add to dashboard Cite

show abstract

“…One of the greatest challenges is the removal of heavy metal ions from the water, which can be sorted by utilizing sulfur copolymers. Sulfur polymers have shown promising potential for the removal of heavy metals from water due to their unique properties. ,,,− The following are some key points regarding the use of sulfur polymers for heavy metal removal. Sulfur polymers possess a high affinity for heavy metals, allowing them to effectively adsorb and bind with metal ions present in water.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

A Comprehensive Exploration of Polysulfides, From Synthesis Techniques to Diverse Applications and Future Frontiers

Amna,

Alhassan

2024

ACS Appl. Polym. Mater.

Self Cite

View full text Add to dashboard Cite

The present review offers a concise overview of polysulfides, focusing on various techniques for synthesizing polymers with high sulfur content through direct elemental sulfur polymerization. These methodologies encompass condensation, ionic, and free radical polymerizations. Of particular interest is the extensively discussed free radical polymerization type known as inverse vulcanization. The report delves into the diverse applications of polysulfides, spanning areas such as lithium−sulfur batteries, self-healing materials, IR imaging technology, energy storage, controlled fertilizer, antimicrobial agents, oil spill remediation, water-soluble polymers, and separation science, specifically in metal removal from wastewater. Polysulfides showcase distinctive properties, including optical, thermoresponsive, mechanical, and electrochemical attributes. However, it is crucial to acknowledge that this field is not without its challenges. The review briefly explores the current challenges and potential future developments associated with polysulfides. Additionally, it provides a cursory examination of the role of simulations, modeling, and artificial intelligence in advancing the understanding and applications of polysulfides.

show abstract

“…In this regard, Ortiz-Imedio et al [29] assessed the engine performances and combustion of low-carbon fuels as H 2 and CH 4 , detailing the evolution of pressure, temperature, heat release, emissions, flame growth speed and volumetric efficiency at different mixtures ratio, while Perez-Gordillo et al [30] carried out the analysis of the technical-environmental performances of a syngas-fueled spark ignition engine through a 3D CFD model written within the KIVA 4 environment when changing the ignition energy, ignition timing, or spark location. With respect to homogenous charge compression ignition (HCCI) engines, Wiemann et al [31] studied the effects of methane percentage in syngas composition through a validated numerical model in the Cantera software (https://www.cantera.org, accessed on 1 February 2024), while Ali et al [32] analyzed the in-cylinder combustion phenomena in a HCCI engine through CFD techniques. In both papers, the simulation results were validated with experimental tests in the form of in-cylinder pressure and heat release rate at different equivalence ratios.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Syngas Composition on Engine Thermal Balance in a Biomass Powered CHP Unit: A 3D CFD Study

Costa,

Piazzullo

2024

Energies

View full text Add to dashboard Cite

Syngas from biomass gasification represents an interesting alternative to traditional fuels in spark-ignition (SI) internal combustion engines (ICEs). The presence of inert species in the syngas (H2O, CO2, N2) reduces the amount of primary energy that can be exploited through combustion, but it can also have an insulating effect on the cylinder walls, increasing the average combustion temperature and reducing heat losses. A predictive numerical approach is here proposed to derive hints related to the possible optimization of the syngas-engine coupling and to balance at the best the opposite effects taking place during the energy conversion process. A three-dimensional (3D) computational fluid dynamics (CFD) model is developed, based on a detailed kinetic mechanism of combustion, to reproduce the combustion cycle of a cogenerative engine fueled by syngas deriving from the gasification of different feedstocks. Numerical results are validated with respect to experimental measurements made under real operation. Main findings reveal how heat transfer mainly occurs through the chamber and piston walls up to 50° after top dead center (ATDC), with the presence of inert gases (mostly N2) which decrease the syngas lower calorific value but have a beneficial insulating effect along the liner walls. However, the overall conversion efficiency of the biomass-to-ICE chain is mostly favored by high-quality syngas from biomasses with low-ashes content.

show abstract

A computational study to analyze the effect of equivalence ratio and hydrogen volume fraction on the ultra-lean burning of the syngas-fueled HCCI engine

Cited by 21 publications

References 22 publications

Experimental Study on Sustainability Involving the Pugh Matrix on Emission Values of High-Temperature Air in the Premixed Charged Compression Ignition Engine

Experimental Study on Sustainability Involving the Pugh Matrix on Emission Values of High-Temperature Air in the Premixed Charged Compression Ignition Engine

A Comprehensive Exploration of Polysulfides, From Synthesis Techniques to Diverse Applications and Future Frontiers

The Effects of Syngas Composition on Engine Thermal Balance in a Biomass Powered CHP Unit: A 3D CFD Study

Contact Info

Product

Resources

About