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Medhat A. Nemitallah
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Journal Articles

STABILITY AND COMBUSTION/EMISSION CHARACTERISTICS OF STRATIFIED DUAL-SWIRL OXY-METHANE FLAMES: EFFECTS OF OXYGEN FRACTION

Accepted Manuscript
Mohamed Hamdy, Mohammed El-Adawy, Ahmed Abdelhalim, Ahmed Abdelhafez, Medhat A. Nemitallah
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol.
Paper No: JERT-24-1413
https://doi.org/10.1115/1.4066657
Published Online: September 24, 2024
View Article titled, STABILITY AND COMBUSTION/EMISSION CHARACTERISTICS OF STRATIFIED DUAL-SWIRL OXY-METHANE FLAMES: EFFECTS OF OXYGEN FRACTION
Open the PDF for STABILITY AND COMBUSTION/EMISSION CHARACTERISTICS OF STRATIFIED DUAL-SWIRL OXY-METHANE FLAMES: EFFECTS OF OXYGEN FRACTION in another window
Topics: Combustion, Emissions, Flames, Methane, Oxygen, Stability
Journal Articles

Retrofitting Natural Gas–Fired Boiler for Hydrogen Combustion: Operational Performance and NOx Emissions

Medhat A. Nemitallah, Mansur Aliyu, Mohamed Hamdy, Mohamed A. Habib
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. October 2024, 146(10): 101701.
Paper No: JERT-24-1111
https://doi.org/10.1115/1.4065205
Published Online: June 24, 2024
View Article titled, Retrofitting Natural Gas–Fired Boiler for Hydrogen Combustion: Operational Performance and NOx Emissions
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Topics: Boilers, Combustion, Emissions, Hydrogen, Methane, Nitrogen oxides, Temperature, Fuels, Furnaces, Flames
Proceedings Papers

Combined Effect of Hydrogen-Enrichment and Stratification on the Stability and Structure of Premixed Swirl-Stabilized CH 4 /Air Flames

Ahmed Abdelhalim, Ahmed Abdelhafez, Medhat A. Nemitallah
Proc. ASME. IMECE2023, Volume 10: Heat Transfer and Thermal Engineering, V010T11A009, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-113230
https://doi.org/10.1115/IMECE2023-113230
View Paper titled, Combined Effect of Hydrogen-Enrichment and Stratification on the Stability and Structure of Premixed Swirl-Stabilized CH 4 /Air Flames
Open the PDF for Combined Effect of Hydrogen-Enrichment and Stratification on the Stability and Structure of Premixed Swirl-Stabilized CH 4 /Air Flames in another window
Topics: Combustion, Combustion chambers, Emissions, Flames, Gas turbines, Hydrogen, Methane, Nitrogen oxides, Stability, Temperature
Journal Articles

Impacts of Flow Swirl on Stability and Flow/Flame Interactions of Premixed Oxy-Methane Swirl Flames

Medhat A. Nemitallah, Shorab Hossain, Ahmed Abdelhafez, Mohamed A. Habib
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. October 2023, 145(10): 102303.
Paper No: JERT-23-1186
https://doi.org/10.1115/1.4062958
Published Online: August 1, 2023
View Article titled, Impacts of Flow Swirl on Stability and Flow/Flame Interactions of Premixed Oxy-Methane Swirl Flames
Open the PDF for Impacts of Flow Swirl on Stability and Flow/Flame Interactions of Premixed Oxy-Methane Swirl Flames in another window
Topics: Combustion chambers, Flames, Flow (Dynamics), Methane, Stability, Combustion, Temperature, Gas turbines, Carbon dioxide
Journal Articles

Effects of Adiabatic Flame Temperature and Oxygen Concentration in CH 4 /N 2 /O 2 Nonswirl Jet Flames: Experimental and Numerical Study

Mansur Aliyu, Medhat A. Nemitallah, Ahmed Abdelhafez, Syed A. M. Said, Paul C. Okonkwo, Mohamed A. Habib
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. August 2023, 145(8): 081201.
Paper No: JERT-23-1068
https://doi.org/10.1115/1.4056892
Published Online: March 2, 2023
View Article titled, Effects of Adiabatic Flame Temperature and Oxygen Concentration in CH 4 /N 2 /O 2 Nonswirl Jet Flames: Experimental and Numerical Study
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Topics: Combustion, Combustion chambers, Emissions, Flames, Methane, Oxygen, Temperature, Turbulence, Carbon dioxide, Fuels
Journal Articles

Stratified Flames in Dual Annular Counter-Rotating Swirl Burner for Wider Operability Gas Turbines

Medhat A. Nemitallah, Mohamed S. Elzayed, Abdulrahim Alshadidi, Mohanad Abualkhair, Ahmed Abdelhafez, F. M. Alzahrani, Abdul Gani Abdul Jameel
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. January 2023, 145(1): 012305.
Paper No: JERT-22-1326
https://doi.org/10.1115/1.4055095
Published Online: October 21, 2022
View Article titled, Stratified Flames in Dual Annular Counter-Rotating Swirl Burner for Wider Operability Gas Turbines
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Topics: Combustion, Combustion chambers, Emissions, Flames, Flow (Dynamics), Gas turbines, Temperature, Oxygen, Methane
Journal Articles

Role of Oxidizer Mixture Composition on Stabilizing Stratified Oxy-Flames in Dual Lean Premixed Combustors for Gas Turbines

Medhat A. Nemitallah, Abdulhammed K. Hamzat, Kehinde G. Ismaila
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. March 2023, 145(3): 031701.
Paper No: JERT-22-1463
https://doi.org/10.1115/1.4055226
Published Online: September 1, 2022
View Article titled, Role of Oxidizer Mixture Composition on Stabilizing Stratified Oxy-Flames in Dual Lean Premixed Combustors for Gas Turbines
Open the PDF for Role of Oxidizer Mixture Composition on Stabilizing Stratified Oxy-Flames in Dual Lean Premixed Combustors for Gas Turbines in another window
Topics: Combustion, Combustion chambers, Emissions, Flames, Flow (Dynamics), Gas turbines, Oxygen, Temperature, Fuels, Methane
Journal Articles

Effects of Adiabatic Flame Temperature on Premixed Combustion Stability and Emission Characteristics of Swirl-Stabilized Oxy-Methane Flames

Medhat A. Nemitallah, Ibrahim B. Mansir, Md Azazul Haque, Ahmed Abdelhafez, Mohamed A. Habib
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. February 2023, 145(2): 022302.
Paper No: JERT-22-1316
https://doi.org/10.1115/1.4054888
Published Online: July 19, 2022
View Article titled, Effects of Adiabatic Flame Temperature on Premixed Combustion Stability and Emission Characteristics of Swirl-Stabilized Oxy-Methane Flames
Open the PDF for Effects of Adiabatic Flame Temperature on Premixed Combustion Stability and Emission Characteristics of Swirl-Stabilized Oxy-Methane Flames in another window
Topics: Combustion, Combustion chambers, Emissions, Flames, Methane, Temperature, Stability, Oxygen, Flow (Dynamics), Fuels
Journal Articles

Role of Adiabatic Flame Temperature on Controlling Operability of a Micromixer-Based Gas Turbine Combustor Holding Premixed Oxy-Flames for Carbon Capture

Mansur Aliyu, Medhat A. Nemitallah, Syed A. M. Said, Ahmed Abdelhafez, Ibrahim B. Mansir, Mohamed A. Habib
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. October 2022, 144(10): 102307.
Paper No: JERT-22-1038
https://doi.org/10.1115/1.4053983
Published Online: April 1, 2022
View Article titled, Role of Adiabatic Flame Temperature on Controlling Operability of a Micromixer-Based Gas Turbine Combustor Holding Premixed Oxy-Flames for Carbon Capture
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Topics: Combustion, Combustion chambers, Emissions, Flames, Flow (Dynamics), Temperature, Turbulence, Gas turbines, Carbon capture and storage, Large eddy simulation
Journal Articles

Stratified and Hydrogen Combustion Techniques for Higher Turndown and Lower Emissions in Gas Turbines

Medhat A. Nemitallah, MD Azazul Haque, Muzafar Hussain, Ahmed Abdelhafez, Mohamed A. Habib
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Review Articles
J. Energy Resour. Technol. February 2022, 144(2): 020801.
Paper No: JERT-21-1706
https://doi.org/10.1115/1.4052541
Published Online: October 20, 2021
View Article titled, Stratified and Hydrogen Combustion Techniques for Higher Turndown and Lower Emissions in Gas Turbines
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Topics: Combustion, Combustion chambers, Emissions, Flames, Fuels, Gas turbines, Hydrogen, Nitrogen oxides, Stability
Journal Articles

Experimental and Statistical ANOVA Analysis on Combustion Stability of CH 4 /O 2 /CO 2 in a Partially Premixed Gas Turbine Combustor

Sherif S. Rashwan, Bassel Abdelkader, Ahmed Abdalmonem, Tharwat W. Abou-Arab, Medhat A. Nemitallah, Mohamed A. Habib, Abdelmaged H. Ibrahim
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. June 2022, 144(6): 062301.
Paper No: JERT-21-1220
https://doi.org/10.1115/1.4051755
Published Online: August 4, 2021
View Article titled, Experimental and Statistical ANOVA Analysis on Combustion Stability of CH 4 /O 2 /CO 2 in a Partially Premixed Gas Turbine Combustor
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Topics: Carbon dioxide, Combustion, Flames, Fuels, Statistical analysis, Methane, Combustion chambers, Regression analysis, Stability, Oxygen
Proceedings Papers

Micromixers and Hydrogen Enrichment: The Future Combustion Technology in Zero-Emission Power Plants

Muzafar Hussain, Ahmed Abdelhafez, Medhat A. Nemitallah, Mohamed A. Habib
Proc. ASME. POWER2020, ASME 2020 Power Conference, V001T02A004, August 4–5, 2020
Publisher: American Society of Mechanical Engineers
Paper No: POWER2020-16809
https://doi.org/10.1115/POWER2020-16809
View Paper titled, Micromixers and Hydrogen Enrichment: The Future Combustion Technology in Zero-Emission Power Plants
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Topics: Combustion chambers, Combustion technologies, Cycles, Emissions, Gas turbines, Hydrogen, Power stations, Stability
Journal Articles

Boilers Optimal Control for Maximum Load Change Rate

Moustafa Elshafei, Mohamed A. Habib, Iyad Al-Zaharnah, Medhat A. Nemitallah
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research-Article
J. Energy Resour. Technol. September 2014, 136(3): 031301.
Paper No: JERT-12-1216
https://doi.org/10.1115/1.4027563
Published Online: May 13, 2014
View Article titled, Boilers Optimal Control for Maximum Load Change Rate
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Topics: Boilers, Optimization, Steam, Stress, Pressure, Boiler controls, Water, Feedwater, Combined heat and power, Genetic algorithms