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Randall Gemmen
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Journal Articles

Evaluation of Methods for Thermal Management in a Coal-Based SOFC Turbine Hybrid Through Numerical Simulation

David Tucker, John VanOsdol, Eric Liese, Larry Lawson, Stephen Zitney, Randall Gemmen, J. Christopher Ford, Comas Haynes
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2012, 9(4): 041004.
https://doi.org/10.1115/1.4006044
Published Online: June 15, 2012
View Article titled, Evaluation of Methods for Thermal Management in a Coal-Based SOFC Turbine Hybrid Through Numerical Simulation
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Topics: Coal, Cycles, Fuel cells, Fuels, Heat, Pressure, Simulation results, Solid oxide fuel cells, Turbines, Temperature
Journal Articles

Examination of the Effect of System Pressure Ratio and Heat Recuperation on the Efficiency of a Coal-Based Gas Turbine Fuel Cell Hybrid Power Generation System With CO 2 Capture

John VanOsdol, Randall Gemmen, Eric Liese
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2011, 8(4): 041009.
https://doi.org/10.1115/1.4002793
Published Online: March 31, 2011
View Article titled, Examination of the Effect of System Pressure Ratio and Heat Recuperation on the Efficiency of a Coal-Based Gas Turbine Fuel Cell Hybrid Power Generation System With CO 2 Capture
Open the PDF for Examination of the Effect of System Pressure Ratio and Heat Recuperation on the Efficiency of a Coal-Based Gas Turbine Fuel Cell Hybrid Power Generation System With CO 2 Capture in another window
Topics: Anodes, Brayton cycle, Carbon capture and storage, Coal, Fuel cells, Fuels, Gas turbines, Heat, Pressure, Solid oxide fuel cells
Proceedings Papers

Operation of a Solid Oxide Fuel Cell on Biodiesel With a Partial Oxidation Reformer

Nicholas Siefert, Dushyant Shekhawat, Randall Gemmen, Edward Robey, Richard Bergen, Daniel Haynes, Kevin Moore, Mark Williams, Mark Smith
Proc. ASME. FUELCELL2010, ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 1, 371-376, June 14–16, 2010
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2010-33326
https://doi.org/10.1115/FuelCell2010-33326
View Paper titled, Operation of a Solid Oxide Fuel Cell on Biodiesel With a Partial Oxidation Reformer
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Topics: Biodiesel, Oxidation, Solid oxide fuel cells, Syngas, Catalysts, Fuels, Anodes, Fuel cells, Hydrogen, Manufacturing
Journal Articles

Multivariable Robust Control of a Simulated Hybrid Solid Oxide Fuel Cell Gas Turbine Plant

Alex Tsai, Larry Banta, David Tucker, Randall Gemmen
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2010, 7(4): 041008.
https://doi.org/10.1115/1.4000628
Published Online: April 7, 2010
View Article titled, Multivariable Robust Control of a Simulated Hybrid Solid Oxide Fuel Cell Gas Turbine Plant
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Topics: Air flow, Algorithms, Control equipment, Fuel cells, Fuels, Gas turbines, Heat, Robust control, Signals, Solid oxide fuel cells
Journal Articles

Relative Gain Array Analysis of a Solid Oxide Fuel Cell Gas Turbine Hybrid Plant

Alex Tsai, Larry Banta, David Tucker, Randall Gemmen
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2010, 7(3): 031004.
https://doi.org/10.1115/1.3206973
Published Online: March 9, 2010
View Article titled, Relative Gain Array Analysis of a Solid Oxide Fuel Cell Gas Turbine Hybrid Plant
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Topics: Air flow, Frequency response, Gas turbines, Solid oxide fuel cells, Transfer functions, Valves, Fuel cells, Signals, Flow (Dynamics), Cycles
Journal Articles

Scaling a Solid Oxide Fuel Cell Gas Turbine Hybrid System to Meet a Range of Power Demand

John VanOsdol, Eric Liese, David Tucker, Randall Gemmen, Robert James
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Design Innovations
J. Electrochem. En. Conv. Stor. February 2010, 7(1): 015001.
https://doi.org/10.1115/1.3115623
Published Online: October 5, 2009
View Article titled, Scaling a Solid Oxide Fuel Cell Gas Turbine Hybrid System to Meet a Range of Power Demand
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Topics: Fuels, Solid oxide fuel cells, Temperature, Turbines, Gas turbines, Fuel cells, Flow (Dynamics)
Proceedings Papers

Using Staged Compression to Increase the System Efficiency of a Coal Based Gas Turbine Fuel Cell Hybrid Power Generation System With Carbon Capture

John G. VanOsdol, Randall Gemmen, Edward Parsons
Proc. ASME. POWER2008, ASME 2008 Power Conference, 679-689, July 22–24, 2008
Publisher: American Society of Mechanical Engineers
Paper No: POWER2008-60111
https://doi.org/10.1115/POWER2008-60111
View Paper titled, Using Staged Compression to Increase the System Efficiency of a Coal Based Gas Turbine Fuel Cell Hybrid Power Generation System With Carbon Capture
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Topics: Carbon capture and storage, Coal, Compression, Fuel cells, Gas turbines, Hybrid power systems, System efficiency, Compressors, Heat, Air flow
Proceedings Papers

Control Sensitivity Study for a Hybrid Fuel Cell/Gas Turbine System

Larry Banta, Jason Absten, Alex Tsai, Randall Gemmen, David Tucker
Proc. ASME. FUELCELL2008, ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, 653-659, June 16–18, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2008-65054
https://doi.org/10.1115/FuelCell2008-65054
View Paper titled, Control Sensitivity Study for a Hybrid Fuel Cell/Gas Turbine System
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Topics: Fuel cells, Gas turbines, Solid oxide fuel cells, Air flow, Valves, Combustion chambers, Compressors, Control systems, Design, Generators
Proceedings Papers

RGA Analysis of a Solid Oxide Fuel Cell Gas Turbine Hybrid Plant

Alex Tsai, Larry Banta, David Tucker, Randall Gemmen
Proc. ASME. FUELCELL2008, ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, 675-680, June 16–18, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2008-65070
https://doi.org/10.1115/FuelCell2008-65070
View Paper titled, RGA Analysis of a Solid Oxide Fuel Cell Gas Turbine Hybrid Plant
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Topics: Gas turbines, Solid oxide fuel cells, Transfer functions, Air flow, Cycles, Frequency response, System coupling, Test facilities, Valves
Proceedings Papers

Multivariable Robust Control of a Simulated Hybrid Solid Oxide Fuel Cell Gas Turbine Plant

Alex Tsai, Larry Banta, David Tucker, Randall Gemmen
Proc. ASME. FUELCELL2008, ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, 681-689, June 16–18, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2008-65071
https://doi.org/10.1115/FuelCell2008-65071
View Paper titled, Multivariable Robust Control of a Simulated Hybrid Solid Oxide Fuel Cell Gas Turbine Plant
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Topics: Gas turbines, Robust control, Solid oxide fuel cells, Fuel cells, Air flow, Algorithms, Simulation, Transfer functions, Transients (Dynamics), Frequency response
Proceedings Papers

Porous Anode Model for Coal Syngas Fuelled SOFC: Combined Mass and Energy Transport Normal to Cell Plane

Kirk Gerdes, Randall Gemmen
Proc. ASME. FUELCELL2008, ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, 165-175, June 16–18, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2008-65055
https://doi.org/10.1115/FuelCell2008-65055
View Paper titled, Porous Anode Model for Coal Syngas Fuelled SOFC: Combined Mass and Energy Transport Normal to Cell Plane
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Topics: Anodes, Coal, Solid oxide fuel cells, Syngas, Heat, Composite materials, Current density, Electrochemical reactions, Electrolytes, Furnaces
Proceedings Papers

Examination of the Effect of System Pressure Ratio and Heat Recuperation on the Efficiency of a Coal Based Gas Turbine Fuel Cell Hybrid Power Generation System With CO 2 Capture

John G. VanOsdol, Randall Gemmen, Eric Liese
Proc. ASME. FUELCELL2008, ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, 407-415, June 16–18, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2008-65083
https://doi.org/10.1115/FuelCell2008-65083
View Paper titled, Examination of the Effect of System Pressure Ratio and Heat Recuperation on the Efficiency of a Coal Based Gas Turbine Fuel Cell Hybrid Power Generation System With CO 2 Capture
Open the PDF for Examination of the Effect of System Pressure Ratio and Heat Recuperation on the Efficiency of a Coal Based Gas Turbine Fuel Cell Hybrid Power Generation System With CO 2 Capture in another window
Topics: Carbon capture and storage, Coal, Fuel cells, Gas turbines, Heat, Hybrid power systems, Pressure, Carbon dioxide, Compression, Anodes
Proceedings Papers

Characterization of Air Flow Management and Control in a Fuel Cell Turbine Hybrid Power System Using Hardware Simulation

David Tucker, Larry Lawson, Randall Gemmen
Proc. ASME. POWER2005, ASME 2005 Power Conference, 959-967, April 5–7, 2005
Publisher: American Society of Mechanical Engineers
Paper No: PWR2005-50127
https://doi.org/10.1115/PWR2005-50127
View Paper titled, Characterization of Air Flow Management and Control in a Fuel Cell Turbine Hybrid Power System Using Hardware Simulation
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Topics: Air flow, Fuel cells, Hardware, Hybrid power systems, Simulation, Turbines, Gas turbines, Flow (Dynamics), Combustion chambers, Compressors
Proceedings Papers

Fabrication and Preliminary Testing of a Novel Piezoelectrically Actuated Microvalve

Fatih Ayhan, Jeffrey S. Vipperman, William Clark, Jimmy Thornton, Randall Gemmen
Proc. ASME. IMECE2003, Microelectromechanical Systems, 385-391, November 15–21, 2003
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2003-41482
https://doi.org/10.1115/IMECE2003-41482
View Paper titled, Fabrication and Preliminary Testing of a Novel Piezoelectrically Actuated Microvalve
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Topics: Manufacturing, Testing, Actuators, Flow (Dynamics), Temperature, Valves, Brass (Metal), Crystals, Cutting, Deflection