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Journal Articles

Multistage Turbomachinery Optimization for High-Temperature Heat Pumps With the Reverse Rankine Cycle

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Robert Schaffrath, Panagiotis Stathopoulos, Andreas Schmitz, Eberhard Nicke
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2025, 147(11): 111003.
Paper No: TURBO-24-1155
https://doi.org/10.1115/1.4068480
Published Online: May 9, 2025
View Articletitled, Multistage Turbomachinery Optimization for High-Temperature Heat Pumps With the Reverse Rankine Cycle
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Topics: Compressors, Computational fluid dynamics, Optimization, Turbomachinery, Pressure, Turbochargers, Design, Rankine cycle, Heat pumps, Simulation
Journal Articles

Thermal Load Control in High-Temperature Heat Pumps: A Comparative Study

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Matteo Pettinari, Guido Francesco Frate, Lorenzo Ferrari, Fatma Cansu Yücel, A. Phong Tran, Panagiotis Stathopoulos, Konstantinos Kyprianidis
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2025, 147(5): 051006.
Paper No: GTP-24-1571
https://doi.org/10.1115/1.4066706
Published Online: November 14, 2024
View Articletitled, Thermal Load Control in High-Temperature Heat Pumps: A Comparative Study
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Topics: Compressors, Fluids, Heat pumps, High temperature, Temperature, Thermal loads, Turbomachinery, Heat exchangers, Heat, Transients (Dynamics)
Journal Articles

A Comprehensive Thermodynamic Analysis of Gas Turbine Combined Cycles With Pressure Gain Combustion Based on Humphrey Cycle

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Abhishek Dubey, Alessandro Sorce, Panagiotis Stathopoulos
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2025, 147(2): 021013.
Paper No: GTP-24-1479
https://doi.org/10.1115/1.4066255
Published Online: September 26, 2024
View Articletitled, A Comprehensive Thermodynamic Analysis of Gas Turbine Combined Cycles With Pressure Gain Combustion Based on Humphrey Cycle
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Topics: Combined cycles, Combustion, Combustion chambers, Cycles, Gas turbines, Pressure, Turbines, Temperature, Cooling
Proceedings Papers

A Comprehensive Thermodynamic Analysis of Gas Turbine Combined Cycles With Pressure Gain Combustion Based on Humphrey Cycle

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Abhishek Dubey, Alessandro Sorce, Panagiotis Stathopoulos
Proc. ASME. GT2024, Volume 5: Cycle Innovations, V005T06A010, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124972
https://doi.org/10.1115/GT2024-124972
View Paper titled, A Comprehensive Thermodynamic Analysis of Gas Turbine Combined Cycles With Pressure Gain Combustion Based on Humphrey Cycle
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Topics: Combined cycles, Combustion, Cooling, Cycles, Gas turbines, Pressure, Turbines
Proceedings Papers

1D Modelling of a Water-Steam Ejector as a Compression Step in High-Temperature Heat Pumps

Open Access

Omar Abu Khass, Anh Phong Tran, Steffen Klöppel, Panagiotis Stathopoulos, Eberhard Nicke
Proc. ASME. GT2024, Volume 5: Cycle Innovations, V005T06A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124983
https://doi.org/10.1115/GT2024-124983
View Paper titled, 1D Modelling of a Water-Steam Ejector as a Compression Step in High-Temperature Heat Pumps
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Topics: Compression, Ejectors, Heat pumps, High temperature, Modeling, Steam, Water
Proceedings Papers

Thermal Load Control in High-Temperature Heat Pumps: A Comparative Study

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Matteo Pettinari, Guido Francesco Frate, Lorenzo Ferrari, Fatma Cansu Yücel, A. Phong Tran, Panagiotis Stathopoulos, Konstantinos Kyprianidis
Proc. ASME. GT2024, Volume 6: Education; Electric Power; Energy Storage; Fans and Blowers, V006T09A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129355
https://doi.org/10.1115/GT2024-129355
View Paper titled, Thermal Load Control in High-Temperature Heat Pumps: A Comparative Study
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Topics: Heat pumps, High temperature, Thermal loads
Proceedings Papers

A Reduced Order Methodology for Optimizing Turbine Expanders Working With Rotating Detonation Combustors

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Gokkul Raj Varatharajulu Purgunan, Majid Asli, Roman Klopsch, Josh Meister, Panagiotis Stathopoulos
Proc. ASME. GT2024, Volume 5: Cycle Innovations, V005T06A017, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126249
https://doi.org/10.1115/GT2024-126249
View Paper titled, A Reduced Order Methodology for Optimizing Turbine Expanders Working With Rotating Detonation Combustors
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Topics: Combustion, Combustion chambers, Entropy, Explosions, Optimization, Turbines
Proceedings Papers

Multistage Turbomachinery Optimization for High Temperature Heat Pumps With the Reverse Rankine Cycle

Open Access

Robert Schaffrath, Panagiotis Stathopoulos, Andreas Schmitz, Eberhard Nicke
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT34A023, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128083
https://doi.org/10.1115/GT2024-128083
View Paper titled, Multistage Turbomachinery Optimization for High Temperature Heat Pumps With the Reverse Rankine Cycle
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Topics: Compressors, Heat pumps, High temperature, Optimization, Rankine cycle, Turbomachinery
Journal Articles

Multidisciplinary Optimization of Thermodynamic Cycles for Large-Scale Heat Pumps With Simultaneous Component Design

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Jens Gollasch, Michael Lockan, Panagiotis Stathopoulos, Eberhard Nicke
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2024, 146(2): 021015.
Paper No: GTP-23-1354
https://doi.org/10.1115/1.4063637
Published Online: November 21, 2023
View Articletitled, Multidisciplinary Optimization of Thermodynamic Cycles for Large-Scale Heat Pumps With Simultaneous Component Design
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Topics: Design, Heat exchangers, Heat pumps, Optimization, Compressors, Cycles
Proceedings Papers

Multi-Disciplinary Optimization of Thermodynamic Cycles for Large-Scale Heat Pumps With Simultaneous Component Design

Open Access

Jens Gollasch, Michael Lockan, Panagiotis Stathopoulos, Eberhard Nicke
Proc. ASME. GT2023, Volume 5: Cycle Innovations, V005T06A010, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101983
https://doi.org/10.1115/GT2023-101983
View Paper titled, Multi-Disciplinary Optimization of Thermodynamic Cycles for Large-Scale Heat Pumps With Simultaneous Component Design
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Topics: Compressors, Cycles, Design, Heat pumps, Optimization, Thermodynamic cycles
Proceedings Papers

Investigation on Process Architectures for High-Temperature Heat Pumps Based on a Reversed Brayton Cycle

Open Access

Nancy Kabat, Enrico Jende, Eberhard Nicke, Panagiotis Stathopoulos
Proc. ASME. GT2023, Volume 5: Cycle Innovations, V005T06A015, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102497
https://doi.org/10.1115/GT2023-102497
View Paper titled, Investigation on Process Architectures for High-Temperature Heat Pumps Based on a Reversed Brayton Cycle
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Topics: Architecture, Brayton cycle, Heat, Heat pumps, High temperature
Proceedings Papers

Modelling of Two-Phase Water Ejector in Rankine Cycle High Temperature Heat Pumps

Open Access

Omar Abu Khass, Anh Phong Tran, Steffen Klöppel, Panagiotis Stathopoulos
Proc. ASME. GT2023, Volume 5: Cycle Innovations, V005T06A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101245
https://doi.org/10.1115/GT2023-101245
View Paper titled, Modelling of Two-Phase Water Ejector in Rankine Cycle High Temperature Heat Pumps
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Topics: Compression, Ejectors, Heat, Heat pumps, High temperature, Modeling, Rankine cycle, Steam, Water
Proceedings Papers

An Optimization Methodology for Turbines Driven by Pulsed Detonation Combustors

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Majid Asli, Panagiotis Stathopoulos
Proc. ASME. GT2022, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A022, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80673
https://doi.org/10.1115/GT2022-80673
View Paper titled, An Optimization Methodology for Turbines Driven by Pulsed Detonation Combustors
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Topics: Combustion chambers, Explosions, Optimization, Turbines, Exhaust systems, Flow (Dynamics), Combustion, Design, Emissions, Gas turbines
Proceedings Papers

Conceptual Study of Thermally Coupled Micro Gas Turbines and High Temperature Heat Pumps for Trigeneration

Open Access

Jens Oliver Gollasch, Eleni Agelidou, Martin Henke, Panagiotis Stathopoulos
Proc. ASME. GT2022, Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage, V004T06A019, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81959
https://doi.org/10.1115/GT2022-81959
View Paper titled, Conceptual Study of Thermally Coupled Micro Gas Turbines and High Temperature Heat Pumps for Trigeneration
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Topics: Heat pumps, High temperature, Micro gas turbines
Proceedings Papers

Simulation of a Safe Start-Up Maneuver for a Brayton Heat Pump

Open Access

Johannes Oehler, A. Phong Tran, Panagiotis Stathopoulos
Proc. ASME. GT2022, Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage, V004T06A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79399
https://doi.org/10.1115/GT2022-79399
View Paper titled, Simulation of a Safe Start-Up Maneuver for a Brayton Heat Pump
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Topics: Brayton cycle, Heat, Heat pumps, Simulation, Transients (Dynamics)
Journal Articles

An Optimization Methodology for Turbines Driven by Pulsed Detonation Combustors

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Majid Asli, Panagiotis Stathopoulos
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2022, 144(11): 111004.
Paper No: GTP-22-1330
https://doi.org/10.1115/1.4055490
Published Online: September 20, 2022
View Articletitled, An Optimization Methodology for Turbines Driven by Pulsed Detonation Combustors
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Topics: Design, Optimization, Turbines, Entropy, Pressure, Flow (Dynamics), Explosions, Blades, Simulation, Combustion chambers
Proceedings Papers

Experimental Characterization of the Combustion in Fuel Flexible Humid Power Cycles

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Simeon Dybe, Felix Güthe, Michael Bartlett, Panagiotis Stathopoulos, Christian Oliver Paschereit
Proc. ASME. GT2021, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A012, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58675
https://doi.org/10.1115/GT2021-58675
View Paper titled, Experimental Characterization of the Combustion in Fuel Flexible Humid Power Cycles
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Topics: Combustion, Experimental characterization, Fuels, Thermodynamic power cycles, Emissions, Hydrogen, Nitrogen oxides, Flames, Steam, Syngas
Journal Articles

Pulsed Impingement Turbine Cooling and Its Effect on the Efficiency of Gas Turbines With Pressure Gain Combustion

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Nicolai Neumann, Arne Berthold, Frank Haucke, Dieter Peitsch, Panagiotis Stathopoulos
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2021, 143(7): 071016.
Paper No: TURBO-20-1344
https://doi.org/10.1115/1.4050361
Published Online: April 26, 2021
View Articletitled, Pulsed Impingement Turbine Cooling and Its Effect on the Efficiency of Gas Turbines With Pressure Gain Combustion
Open the PDF for Pulsed Impingement Turbine Cooling and Its Effect on the Efficiency of Gas Turbines With Pressure Gain Combustion in another window
Topics: Combustion, Cooling, Flow (Dynamics), Gas turbines, Impingement cooling, Pressure, Turbines, Cycles
Journal Articles

Aerodynamic Investigation of Guide Vane Configurations Downstream a Rotating Detonation Combustor

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Majid Asli, Panagiotis Stathopoulos, Christian Oliver Paschereit
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2021, 143(6): 061011.
Paper No: GTP-20-1512
https://doi.org/10.1115/1.4049188
Published Online: March 16, 2021
View Articletitled, Aerodynamic Investigation of Guide Vane Configurations Downstream a Rotating Detonation Combustor
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Topics: Blades, Chords (Trusses), Combustion chambers, Damping, Exhaust systems, Explosions, Flow (Dynamics), Guide vanes, Pressure, Combustion
Proceedings Papers

Numerical Analysis of the Stability and Operation of an Axial Compressor Connected to an Array of Pulsed Detonation Combustors

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Louise Dittmar, Panagiotis Stathopoulos
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A016, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15381
https://doi.org/10.1115/GT2020-15381
View Paper titled, Numerical Analysis of the Stability and Operation of an Axial Compressor Connected to an Array of Pulsed Detonation Combustors
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Topics: Combustion chambers, Compressors, Explosions, Numerical analysis, Stability, Pressure, Firing, Gas turbines, Blades, Boundary-value problems