Reduced-Order Modeling (ROM) of a Segmented Plug-Flow Reactor (PFR) for Hydrogen Separation in Integrated Gasification Combined Cycles (IGCC) DOI Open Access
Osama A. Marzouk

Processes, Journal Year: 2025, Volume and Issue: 13(5), P. 1455 - 1455

Published: May 9, 2025

In an integrated gasification combined cycle (IGCC), a process produces gas stream from solid fuel, such as coal or biomass. This (syngas synthesis gas) resulting the contains carbon monoxide, molecular hydrogen, and dioxide (other gaseous components may also be present depending on gasified fuel gasifying agent). Separating hydrogen this syngas has advantages. One of methods to separate is selective permeation through palladium-based metal membrane. separation complicated it depends nonlinearly various variables. Thus, desirable develop simplified reduced-order model (ROM) that can rapidly estimate performance under operational conditions, preliminary stage computer-aided engineering (CAE) in chemical processes sustainable industrial operations. To fill gap, we here proposed procedure for one-dimensional steady plug-flow reactor (PFR) use investigate membrane (MR), produced (IGCC). model, (a feed stream) enters one side into retentate zone, while nitrogen sweep opposite neighbor permeate zone. The two zones are separated by permeable palladium surfaces selectively hydrogen. After analyzing profile base case (300 °C uniform temperature, 40 atm absolute pressure, 20 pressure), temperature module, retentate-side permeate-side pressure varied individually their influence investigated. all simulation cases, fixed targets 95% recovery 40% mole-fraction at exit demanded. module length allowed change order satisfy these targets. Other dependent permeation-performance variables investigated include logarithmic mean pressure-square-root difference, apparent permeance, efficiency factor permeation. contributions our study linked fields applications, production, gasification, analytical modeling, numerical analysis. addition separation, linear nonlinear regression models derived obtained results. work gives general insights via membranes (MR). For example, most effective improve performance. Increasing value 120 results proportional gain permeated mass flux, with about 0.05 kg/m2.h gained per 1 increase decreasing bar 0.2 causes flux exponentially 1.15 kg/m2.h. 5.11 United Nations Sustainable Development Goal (SDG) numbers 7, 9, 11, 13.

Language: Английский

Technical Review of Radiative-Property Modeling Approaches for Gray and Nongray Radiation, and a Recommended Optimized WSGGM for CO2/H2O-Enriched Gases DOI Creative Commons
Osama A. Marzouk

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 103923 - 103923

Published: Jan. 1, 2025

Language: Английский

Citations

2
Aerial e-mobility perspective: Anticipated designs and operational capabilities of eVTOL urban air mobility (UAM) aircraft DOI Open Access
Osama A. Marzouk

Edelweiss Applied Science and Technology, Journal Year: 2025, Volume and Issue: 9(1), P. 413 - 442

Published: Jan. 4, 2025

We collected data about 13 urban air mobility (UAM) electric vertical take-off and landing (eVTOL) aircraft from 12 UAM companies in the world. While none of these models has yet reached a large-scale commercial operation (particularly as taxis), some them progressed well certification process may have their widely operated within few years. This article focuses on variability configurations eVTOL for aerial e-mobility; such single-fixed-wing, tandem-tilt-wing, canard wing, fixed-rotor fixed-wing, full tilt-rotor, partial V-shaped tail, tailless, twin conventional tail assembly, distributed propulsion, multicopter, rear forward thrust propeller, ducted fans, hybrid airplane-helicopter design. The covered here are: (1) EH216-S (by EHang), (2) VoloCity Volocopter), (3) Lilium Jet Lilium), (4) VoloRegion (5) CityAirbus NextGen Airbus), (6) Passenger Air Vehicle - PAV Boeing), (7) S-A2 Hyundai), (8) Joby Aviation), (9) VX4 Vertical Aerospace Group), (10) Midnight Archer (11) Eve Mobility), (12) Jaunt (13) Generation 6 Wisk Aero). Out e-mobility and/or taxis, we found that 11 utilize wing configuration, while only two use wingless multirotor concept (as hobbyist drones). A fixed-wing design is associated with faster travel speed, at expense added restrictions maneuvering low-speed (or hovering). Six are intended to an onboard human pilot, remaining seven designed be pilotless. One model demonstrated ability hydrogen clean source energy through fuel cell system.

Language: Английский

Citations

2
Summary of the 2023 (1st edition) Report of TCEP (Tracking Clean Energy Progress) by the International Energy Agency (IEA), and Proposed Process for Computing a Single Aggregate Rating DOI Creative Commons
Osama A. Marzouk

E3S Web of Conferences, Journal Year: 2025, Volume and Issue: 601, P. 00048 - 00048

Published: Jan. 1, 2025

We provide a summary of the progress all 53 assessed components describing global alignment with Net Zero Emissions by 2050 Scenario (NZE) International Energy Agency (IEA), an intermediate trajectory scope 2030. The (grouped in eight categories) cover sectors (such as Transport, and Buildings), subsectors Aviation, Building Envelopes), technologies Biofuels, Electrification), infrastructure cross-cutting strategies CO2 Transport Storage, Electrolyzers). For each component, IEA assigned one three qualitative levels; namely “On track”, “More efforts needed”, or “Not on track”. IEA’s assessment results were made publicly available form online web-based report, titled “Tracking Clean Progress”, TCEP, which was published 12/July/2023. Out TCEP’s components, only rated these are (1) Solar Photovoltaic (PV), (2) Electric Vehicles (EV), (3) Lighting. remaining 50 TCEP; 28 22 propose quantitative aggregate numerical score to describe overall clean energy transition reflected TCEP we compute it 2.23/4 (or 55.7%). Finally, present selected historical records (based data) about satisfactory for transition.

Language: Английский

Citations

1
Wind Speed Weibull Model Identification in Oman, and Computed Normalized Annual Energy Production (NAEP) From Wind Turbines Based on Data From Weather Stations DOI Creative Commons
Osama A. Marzouk

Engineering Reports, Journal Year: 2025, Volume and Issue: 7(3)

Published: March 1, 2025

ABSTRACT Using observation records of wind speeds from weather stations in the Sultanate Oman between 2000 and 2023, we compute estimators two Weibull distribution parameters (namely, distribution's shape parameter scale parameter) 10 station locations within eight Omani governorates. The their corresponding governorates are Seeb (in Muscat), Salalah Dhofar), Buraimi Al Buraimi), Masirah Ash Sharqiyah South), Thumrait Sur Khasab Musandam), Sohar Sohar), Fahud Az Zahirah), Saiq Ad Dakhiliyah). obtained speed distributions at these then used to predict annual energy production (AEP) for a proposed reference amount 1 MWp turbine capacity, this specific AEP is designated here by term “normalized (NAEP).” direction also analyzed statistically over same period identify more probable directions. Four were clearly distinguishable as being windy compared others. simulated probability exceeding feasible 6 m/s (21.6 km/h) 41.71% Thumrait, 37.77% Masirah, 29.53% Sur, 17.03% Fahud. NAEP values four estimated 1.727 GWh/MWp/year, 1.419 1.038 0.602 GWh/MWp/year; respectively. location not only fastest (on average) among selected locations, but most unidirectional, blowing almost always south–south‐east (SSE) direction; both features make non‐coastal southern Oman, with an altitude about 467 m, attractive site utility‐scale farms. We analyze data port city Duqm; show that there 24.04%, 0.927 approximately south–south‐west (SSW) time. When photovoltaic (PV) solar systems, onshore systems installed capacity appear be less effective Oman. This study closes gap field where no similar standardized one propose present.

Language: Английский

Citations

1
Edelweiss Applied Science and Technology DOI
Osama A. Marzouk

SSRN Electronic Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Power Density and Thermochemical Properties of Hydrogen Magnetohydrodynamic (H2MHD) Generators at Different Pressures, Seed Types, Seed Levels, and Oxidizers DOI Creative Commons
Osama A. Marzouk

Hydrogen, Journal Year: 2025, Volume and Issue: 6(2), P. 31 - 31

Published: May 2, 2025

Hydrogen and some of its derivatives (such as e-methanol, e-methane, e-ammonia) are promising energy carriers that have the potential to replace conventional fuels, thereby eliminating their harmful environmental impacts. An innovative use hydrogen a zero-emission fuel is forming weakly ionized plasma by seeding combustion products with small amount an alkali metal vapor (cesium or potassium). This formed can be used working fluid in supersonic open-cycle magnetohydrodynamic (OCMHD) power generators. In these OCMHD generators, direct-current (DC) electricity generated straightforwardly without rotary turbogenerators. current study, we quantitatively qualitatively explore levels electric conductivity resultant volumetric output density typical channel, where thermal equilibrium accelerated at Mach number two (Mach 2) while being subject strong applied magnetic field (applied magnetic-field flux density) five teslas (5 T), temperature 2300 K (2026.85 °C). We varied total pressure pre-ionization seeded gas mixture between 1/16 atm 16 atm. also seed level 0.0625% 16% (pre-ionization mole fraction). type cesium potassium. oxidizer air (oxygen–nitrogen mixture, 21–79% mole) pure oxygen. Our results suggest ideal reach exceptional beyond 1000 MW/m3 (or 1 kW/cm3) provided absolute reduced about 0.1 only for rather than Under atmospheric air–hydrogen (1 pressure) 1% fraction vapor, theoretical 410.828 case 104.486 The enhanced using any following techniques: (1) reducing pressure, (2) instead potassium seeding, (3) oxygen (if unchanged). A 4% fraction) recommended. Much lower much higher may harm performance. maximizes not necessarily same conductivity, this due additional thermochemical changes caused additive seed. For example, combustion, maximized 6% fraction, 5%. present comprehensive set computed properties gases, such molecular weight speed sound.

Language: Английский

Citations

0
Reduced-Order Modeling (ROM) of a Segmented Plug-Flow Reactor (PFR) for Hydrogen Separation in Integrated Gasification Combined Cycles (IGCC) DOI Open Access
Osama A. Marzouk

Processes, Journal Year: 2025, Volume and Issue: 13(5), P. 1455 - 1455

Published: May 9, 2025

In an integrated gasification combined cycle (IGCC), a process produces gas stream from solid fuel, such as coal or biomass. This (syngas synthesis gas) resulting the contains carbon monoxide, molecular hydrogen, and dioxide (other gaseous components may also be present depending on gasified fuel gasifying agent). Separating hydrogen this syngas has advantages. One of methods to separate is selective permeation through palladium-based metal membrane. separation complicated it depends nonlinearly various variables. Thus, desirable develop simplified reduced-order model (ROM) that can rapidly estimate performance under operational conditions, preliminary stage computer-aided engineering (CAE) in chemical processes sustainable industrial operations. To fill gap, we here proposed procedure for one-dimensional steady plug-flow reactor (PFR) use investigate membrane (MR), produced (IGCC). model, (a feed stream) enters one side into retentate zone, while nitrogen sweep opposite neighbor permeate zone. The two zones are separated by permeable palladium surfaces selectively hydrogen. After analyzing profile base case (300 °C uniform temperature, 40 atm absolute pressure, 20 pressure), temperature module, retentate-side permeate-side pressure varied individually their influence investigated. all simulation cases, fixed targets 95% recovery 40% mole-fraction at exit demanded. module length allowed change order satisfy these targets. Other dependent permeation-performance variables investigated include logarithmic mean pressure-square-root difference, apparent permeance, efficiency factor permeation. contributions our study linked fields applications, production, gasification, analytical modeling, numerical analysis. addition separation, linear nonlinear regression models derived obtained results. work gives general insights via membranes (MR). For example, most effective improve performance. Increasing value 120 results proportional gain permeated mass flux, with about 0.05 kg/m2.h gained per 1 increase decreasing bar 0.2 causes flux exponentially 1.15 kg/m2.h. 5.11 United Nations Sustainable Development Goal (SDG) numbers 7, 9, 11, 13.

Language: Английский

Citations

0