Investigation of major factors that cause diesel NOx formation and assessment of energy and exergy parameters using e-diesel blends

Nabi, Md. Nurun; Rasul, M.G.; Arefin, Md. Arman; Akram, Washim; Islam, Mohammad Towhidul; Chowdhury, Md. Wahid

doi:10.1016/j.fuel.2021.120298

Cited by 18 publications

(5 citation statements)

References 27 publications

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“…Through this method, compressible turbulence can also be analyzed numerically, which is demonstrated by dissipation rate equation ε and the kinetic energy equation k, shown as follows:

\frac{d (ρ K)}{d t} = S - ρ_{ε} + {normalD}_{normalk}

\frac{d (ρ ε)}{d t} = {normalC}_{1} \frac{S ε}{normalK} - {normalC}_{2} ρ \frac{ε^{2}}{normalK} + {normalC}_{3} ρ (ε \times \cup) + {normalD}_{ε}

where S indicates the generation of turbulent energy, U indicates the velocity vector, D k and D ε indicate the turbulent diffusion, C is a constant, and ρ is the fluid density (kg m –3 ). For modeling with ANSYS, the following were considered: 32 model type: 3D turbulent model (k‐epsilon); mesh element size: coarse (1.6); number of elements: 90134; number of nodes: 97876; minimum and maximum mesh sizes: 0.19 and 0.474, respectively. The number of inflation layers was 3; variation of peak pressure against benchmark 0.11%; engine speeds: 1200 and 2400 rpm; wall temperature: 313 K; injection shape: trapezoidal wave; the mass fraction refers to the blending ratio.…”

Section: Methodsmentioning

confidence: 99%

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Fuel property improvement and exhaust emission reduction, including noise emissions, using an oxygenated additive to waste plastic oil in a diesel engine

Hussam

Nabi²,

Chowdhury³

et al. 2021

Biofuels Bioprod Bioref

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This work reports on an extensive investigation of the physicochemical properties, engine performance, exhaust emissions, and fundamental energy and exergy parameters of waste‐plastic oils blended with an additive, diethyl ether and diesel. A four‐stroke single‐cylinder diesel engine was used for the engine experiments. The seven fuels in this study include a neat diesel, a neat waste plastic oil, two binary blends of diesel‐waste plastic oil, and three ternary blends of diesel with waste plastic oil and diethyl ether. The justification for selecting diethyl ether was to augment fuel properties in the blend and to further reduce emissions. The reasons for choosing waste plastic are not only to harness energy from waste plastic but also to offer an effective solution to the plastic waste management issue. The choice of diesel was to use it as a reference fuel for comparison with other fuels. Fuel properties were observed to be similar, and in some cases better, with the blends. Notable reductions in emissions with identical engine performance and energy and exergy parameters were observed with the five oxygenated blends (plastic oil blends) than with a reference diesel fuel. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…Through this method, compressible turbulence can also be analyzed numerically, which is demonstrated by dissipation rate equation ε and the kinetic energy equation k, shown as follows:

\frac{d (ρ K)}{d t} = S - ρ_{ε} + {normalD}_{normalk}

\frac{d (ρ ε)}{d t} = {normalC}_{1} \frac{S ε}{normalK} - {normalC}_{2} ρ \frac{ε^{2}}{normalK} + {normalC}_{3} ρ (ε \times \cup) + {normalD}_{ε}

Section: Methodsmentioning

confidence: 99%

“…were considered:32 model type: 3D turbulent model (k-epsilon); mesh element size: coarse (1.6); number of elements: 90134; number of nodes: 97876; minimum and maximum mesh sizes: 0.19 and 0.474, respectively.…”

mentioning

confidence: 99%

Fuel property improvement and exhaust emission reduction, including noise emissions, using an oxygenated additive to waste plastic oil in a diesel engine

Hussam

Nabi²,

Chowdhury³

et al. 2021

Biofuels Bioprod Bioref

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“…The exhaust exergy which is the sum of the physical (e phy ) and chemical (e ch ) exergies of each component (i) [19][20][21][22]:…”

Section: Exergy Analysismentioning

confidence: 99%

“…Economically, the price of natural gas was cheaper than DF; for that reason, the fuel cost was lower. Nabi et al [22] studied the main factors causing diesel NO X formation and evaluated energy and exergy factors using e-diesel blends. They investigated the main factors affecting the formation of diesel NO X ethanol-diesel (e-diesel) blends.…”

Section: Introductionmentioning

confidence: 99%

Examination of a CI engine running on poppy seed oil biodiesel/n-pentanol/diesel fuel blends with respect of thermodynamic and economic perspectives

Yaman,

Saltan,

Doǧan

et al. 2023

STET

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The present study regards thermodynamic and economic analyses of a compression-ignition engine running on various blends of biodiesel, n-pentanol, and diesel at different ratios. Diesel fuel and n-pentanol were obtained from commercial companies while biodiesel was produced from poppy (Papaver somniferum L.) seed oil by transesterification method under laboratory conditions. Five fuel blends (diesel fuel, B30Pt30, B30Pt20, B30Pt10, and B30) prepared in different ratios by volume were used in the experimental process. Engine tests were performed at a stable speed (1500 rpm) and four different loads from 25% to 100%. Engine performance data from the dynamometer and harmful emissions from the exhaust emission device were determined. These data were used in energy, exergy, and economic analysis. The energy analysis determines how much of the fuel’s energy was spent on generating power from the crankshaft and thermal losses. In addition, the fuel inlet exergy, exhaust exergy, exergy of thermal losses, and exergy destruction were found throughout the exergy analysis, meanwhile, exergoeconomic analysis was conducted to understand the cost of the energy absorbed and losses at the crankshaft. At maximum engine load, energy efficiency was acquired to be between 25.99% and 34.63% and exergy efficiency between 28.87 and 32.34% as a consequence of the use of test fuels in the diesel engine. The higher cost of the work taken from the crankshaft in binary and ternary fuel blends in the study is on account of the high pump prices of biodiesel and n-pentanol compared to conventional diesel. At 100% load, the cost of the work noted from the crankshaft for diesel fuel, B30, B30Pt10, B30Pt20, and B30Pt30 fuels is 211.86, 2126.77, 3001.27, 3755.02, and 3755.02 $/GJ, respectively.

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“…Exergy efficiency gives a better understanding of diesel engine performances [49,51]. Exergy efficiency is determined by the ratio of total power recovered by the diesel engine to the total chemical exergy rate input:…”

Section: Exergy Efficiencymentioning

confidence: 99%

Impact of Multi-Component Surrogates on the Performances, Pollutants, and Exergy of IC Engines

Mondo

Agrebi

Hamdi

et al. 2022

Entropy

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Even though there is a pressing interest in clean energy sources, compression ignition (CI) engines, also called diesel engines, will remain of great importance for transportation sectors as well as for power generation in stationary applications in the foreseeable future. In order to promote applications dealing with complex diesel alternative fuels by facilitating their integration in numerical simulation, this paper targets three objectives. First, generate novel diesel fuel surrogates with more than one component. Here, five surrogates are generated using an advanced chemistry solver and are compared against three mechanisms from the literature. Second, validate the suggested reaction mechanisms (RMs) with experimental data. For this purpose, an engine configuration, which features a reacting spray flow evolving in a direct-injection (DI), single-cylinder, and four-stroke motor, is used. The RNG k-Epsilon coupled to power-law combustion models is applied to describe the complex in-cylinder turbulent reacting flow, while the hybrid Eulerian-Lagrangian Kelvin Helmholtz-Rayleigh Taylor (KH-RT) spray model is employed to capture the spray breakup. Third, highlight the impact of these surrogate fuels on the combustion properties along with the exergy of the engine. The results include distribution of temperature, pressure, heat release rate (HRR), vapor penetration length, and exergy efficiency. The effect of the surrogates on pollutant formation (NOX, CO, CO2) is also highlighted. The fifth surrogate showed 47% exergy efficiency. The fourth surrogate agreed well with the maximum experimental pressure, which equaled 85 Mpa. The first, second, and third surrogates registered 400, 316, and 276 g/kg fuel, respectively, of the total CO mass fraction at the outlet. These quantities were relatively higher compared to the fourth and fifth RMs.

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Investigation of major factors that cause diesel NOx formation and assessment of energy and exergy parameters using e-diesel blends

Cited by 18 publications

References 27 publications

Fuel property improvement and exhaust emission reduction, including noise emissions, using an oxygenated additive to waste plastic oil in a diesel engine

Fuel property improvement and exhaust emission reduction, including noise emissions, using an oxygenated additive to waste plastic oil in a diesel engine

Examination of a CI engine running on poppy seed oil biodiesel/n-pentanol/diesel fuel blends with respect of thermodynamic and economic perspectives

Impact of Multi-Component Surrogates on the Performances, Pollutants, and Exergy of IC Engines

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