Fuel, Год журнала: 2024, Номер 385, С. 134073 - 134073
Опубликована: Дек. 20, 2024
Язык: Английский
International Journal of Thermofluids, Год журнала: 2025, Номер unknown, С. 101063 - 101063
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
3
Journal of the Energy Institute, Год журнала: 2025, Номер unknown, С. 102013 - 102013
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1
Industrial Crops and Products, Год журнала: 2024, Номер 222, С. 119712 - 119712
Опубликована: Окт. 4, 2024
Язык: Английский
Процитировано
8
Energies, Год журнала: 2024, Номер 17(16), С. 4126 - 4126
Опубликована: Авг. 19, 2024
In modern society where fossil fuel prices are increasing and environmental issues becoming more severe, biodiesel, as a new type of clean fuel, is receiving attention. Biodiesel has the advantages renewability, friendliness, good properties, demonstrating broad application prospects. However, use biodiesel also faces some challenges, such higher density kinematic viscosity, lower calorific value, etc. The nanoparticles in engines helps to achieve goal fuel. terms characteristics, increase cetane flash point improving combustion efficiency safety, but may affect combustion. can promote micro explosions secondary atomization improve cylinder pressure, heat release rate, brake thermal while reducing consumption. Nanoparticles reduce HC CO emissions, through oxygen reaction area, incomplete products. On contrary, CO2 emissions because better conditions oxidation reactions. For NOX temperature others emissions. Comparison shows that all offer varying degrees improvement engine performance provided by TiO2 significantly than other nanoparticles. future, synergistic effect multiple should be explored further achieving effects cannot achieved single nanoparticle.
Язык: Английский
Процитировано
7
International Journal of Thermofluids, Год журнала: 2024, Номер 24, С. 100838 - 100838
Опубликована: Сен. 2, 2024
Biodiesel has emerged as a compelling substitute for conventional diesel fuel, providing sustainable and eco-friendly choice fueling compression ignition engines. This comprehensive study investigates the influence of biodiesel, specifically derived from sunflower oil, through esterification method, on crucial engine performance parameters environmental effects. The examines impact varying torque single-cylinder, four-stroke engine, encompassing such brake thermal efficiency (BTE) specific fuel consumption (BSFC), well exhaust emissions, including unburned hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx). Four distinct biodiesel blends (B10, B20, B30, B40) with oil content are systematically compared to pure (B0). operates at consistent speed 1700 rpm, while undergoes controlled adjustments 0 10 Nm. Subsequently, this explores application an alternating model tree (AMT) machine learning algorithm establish relationships between independent factors, volume (%vol), dependent variables, BTE, BSFC, CO, NOx in combustion engine. Additionally, employs multi-objective ameliorative whale optimization (AWOA) optimize model's output. objective is identify optimal values %vol that maximize minimizing emissions (CO NOx) reducing (BSFC). process yields noteworthy results, AWOA achieving peak BTE 29.714%, BSFC 0.262 kg.kWh-1, 992 ppm 7.3 N.m 13% vol. In contrast, particle swarm (PSO) secured minimum CO level 0.123%, set 7.6 26% AMT models demonstrate high prediction accuracy, coefficient determination (R2) exceeding 0.98.
Язык: Английский
Процитировано
5
International Journal of Thermofluids, Год журнала: 2025, Номер 26, С. 101147 - 101147
Опубликована: Фев. 28, 2025
Язык: Английский
Процитировано
0
International Journal of Energy and Water Resources, Год журнала: 2025, Номер unknown
Опубликована: Март 24, 2025
Язык: Английский
Процитировано
0
Nanotechnology for Environmental Engineering, Год журнала: 2025, Номер 10(2)
Опубликована: Апрель 30, 2025
Язык: Английский
Процитировано
0
International Journal of Thermofluids, Год журнала: 2024, Номер 22, С. 100664 - 100664
Опубликована: Апрель 15, 2024
Considering varying cusp numbers, we investigate the time-dependent, incompressible natural convective flow of an iron oxide-water nanofluid within annulus formed between a square and concentric hypocycloid. The vertical walls are treated as relatively colder walls, while bottom wall disk inner hypocycloid act heat sources. outer upper is considered adiabatic. We transform dimensional, nonlinear, strongly coupled fundamental equations nanofluids in Cartesian coordinates into non-dimensional equations. utilize Galerkin finite element method to solve governing This study comprehensively explores transfer nanofluids, considering essential parameters relevant problem. results highlight remarkable observation, ferric exhibits significantly enhanced compared conventional fluid. precise positioning configuration represents critical phenomenon that substantially improves rates nanofluid. three cusped hypocycloids positioned on perpendicular horizontal axis result surpasses other configurations numbers studied analysis. Notably, discernible increase with nanoparticle volume fraction (maximum 3vol%), it declines diameter. intricate relationship diameter, fraction, number, influences friction factor particle-surface interactions. As number cusps surface increases, velocity magnitude, Nusselt concentration profiles near boundary layer decrease, fluctuations middle indicate combined influence dispersion formation due orientation hypocycloidal cusps. Furthermore, particle diameter sharpness corners lead proportional resistance annulus.
Язык: Английский
Процитировано
3
Process Safety and Environmental Protection, Год журнала: 2024, Номер unknown
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
2