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Proceedings Papers

Field Testing and Operation of a 300 kW Active Magnetic Bearing Supported Turboexpander-Generator for Natural Gas Pressure Letdown

Rasish Khatri, Larry Hawkins, Jeremy Liu, Massimiliano Ortiz Neri, Francesco Cangioli, Davide Biliotti
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A015, June 13–17, 2022
Paper No: GT2022-82332
DOI: https://doi.org/10.1115/GT2022-82332
View Paper titled, Field Testing and Operation of a 300 kW Active Magnetic Bearing Supported Turboexpander-Generator for Natural Gas Pressure Letdown
Click here to open pdf in another window PDF for Field Testing and Operation of a 300 kW Active Magnetic Bearing Supported Turboexpander-Generator for Natural Gas Pressure Letdown
Topics: Bearings, Generators, Joules, Magnetic bearings, Natural gas, Pressure, Testing
Proceedings Papers

The Development of Turboexpander-Generators for Gas Pressure Letdown Part 3: Design Validation

Ovais Ahmed Bin Najeeb, Rasish Khatri, Liping Zheng, Jeremy Liu
Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T19A009, June 13–17, 2022
Paper No: GT2022-82293
DOI: https://doi.org/10.1115/GT2022-82293
View Paper titled, The Development of Turboexpander-Generators for Gas Pressure Letdown Part 3: Design Validation
Click here to open pdf in another window PDF for The Development of Turboexpander-Generators for Gas Pressure Letdown Part 3: Design Validation
Topics: Bearings, Design, Dynamics (Mechanics), Energy generation, Generators, Magnetic bearings, Pressure, Variable speed drives
Proceedings Papers

The Development of Turboexpander-Generators for Gas Pressure Letdown Part I: Design and Analysis

Rasish Khatri, Jeremy Liu, Freddie Sarhan, Ovais Najeeb, Hiroshi Kajita, Mitsuru Kozuka
Proc. ASME. GT2021, Volume 8: Oil and Gas Applications; Steam Turbine, V008T20A018, June 7–11, 2021
Paper No: GT2021-60125
DOI: https://doi.org/10.1115/GT2021-60125
View Paper titled, The Development of Turboexpander-Generators for Gas Pressure Letdown Part I: Design and Analysis
Click here to open pdf in another window PDF for The Development of Turboexpander-Generators for Gas Pressure Letdown Part I: Design and Analysis
Topics: Bearings, Design, Dynamics (Mechanics), Generators, Magnetic bearings, Pressure
Proceedings Papers

The Development of Turboexpander-Generators for Gas Pressure Letdown Part II: Economic Analysis

Jeremy Liu, Rasish Khatri, Freddie Sarhan, Eric Blumber
Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T16A008, June 7–11, 2021
Paper No: GT2021-60317
DOI: https://doi.org/10.1115/GT2021-60317
View Paper titled, The Development of Turboexpander-Generators for Gas Pressure Letdown Part II: Economic Analysis
Click here to open pdf in another window PDF for The Development of Turboexpander-Generators for Gas Pressure Letdown Part II: Economic Analysis
Topics: Economic analysis, Generators, Hydrogen, Joules, Magnetic bearings, Natural gas, Pressure, Renewable energy
Journal Articles

Design of a Compact Magnetically Levitated Blower for Space Applications

Larry Hawkins, Alexei Filatov, Rasish Khatri, Chris DellaCorte, S. Adam Howard
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2021, 143(9): 091012.
Paper No: GTP-21-1084
DOI: https://doi.org/10.1115/1.4050755
Published Online: May 13, 2021
View Article titled, Design of a Compact Magnetically Levitated Blower for Space Applications
Click here to open pdf in another window PDF for Design of a Compact Magnetically Levitated Blower for Space Applications
Topics: Bearings, Design, Engines, Magnetic bearings, Motors, Rotors, Stress, Impellers, Sensors, Simulation
Proceedings Papers

Design of a Compact Magnetically Levitated Blower for Space Applications

Larry Hawkins, Alexei Filatov, Rasish Khatri, Chris DellaCorte, S. Adam Howard
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A023, September 21–25, 2020
Paper No: GT2020-15090
DOI: https://doi.org/10.1115/GT2020-15090
View Paper titled, Design of a Compact Magnetically Levitated Blower for Space Applications
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Topics: Design, Magnetic bearings, Bearings, Carbon dioxide, Sorbents, Actuators, Air bearings, Air flow, Ball bearings, Energy consumption
Journal Articles

Design and Prototype Test Data for a 300 kW Active Magnetic Bearings-Supported Turbine Generator for Natural Gas Pressure Letdown

Rasish Khatri, Lawrence A. Hawkins, Massimiliano Ortiz Neri, Francesco Cangioli, Davide Biliotti
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2020, 142(1): 011007.
Paper No: GTP-19-1411
DOI: https://doi.org/10.1115/1.4045277
Published Online: November 27, 2019
View Article titled, Design and Prototype Test Data for a 300 kW Active Magnetic Bearings-Supported Turbine Generator for Natural Gas Pressure Letdown
Click here to open pdf in another window PDF for Design and Prototype Test Data for a 300 kW Active Magnetic Bearings-Supported Turbine Generator for Natural Gas Pressure Letdown
Topics: Bearings, Design, Stress, Thrust, Pressure, Rotors, Generators, Magnetic bearings, Engineering prototypes, Transfer functions
Proceedings Papers

Design and Prototype Test Data for a 300 kW AMB-Supported Turbine Generator for Natural Gas Pressure Letdown

Rasish Khatri, Larry Hawkins, Massimiliano Ortiz Neri, Francesco Cangioli, Davide Biliotti
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A030, June 17–21, 2019
Paper No: GT2019-91172
DOI: https://doi.org/10.1115/GT2019-91172
View Paper titled, Design and Prototype Test Data for a 300 kW AMB-Supported Turbine Generator for Natural Gas Pressure Letdown
Click here to open pdf in another window PDF for Design and Prototype Test Data for a 300 kW AMB-Supported Turbine Generator for Natural Gas Pressure Letdown
Topics: Design, Engineering prototypes, Natural gas, Pressure, Turbogenerators, Bearings, Magnetic bearings, Generators, Dynamics (Mechanics), Machinery
Journal Articles

An Experimental Investigation of the Dynamic Performance of a Vertical-Application Three-Lobe Bearing

Rasish Khatri, Dara W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2015, 137(4): 042504.
Paper No: GTP-14-1357
DOI: https://doi.org/10.1115/1.4028672
Published Online: April 1, 2015
View Article titled, An Experimental Investigation of the Dynamic Performance of a Vertical-Application Three-Lobe Bearing
Click here to open pdf in another window PDF for An Experimental Investigation of the Dynamic Performance of a Vertical-Application Three-Lobe Bearing
Topics: Bearings, Clearances (Engineering), Stiffness, Stress
Journal Articles

An Experimental Study of the Load-Orientation Sensitivity of Three-Lobe Bearings

Rasish Khatri, Dara W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2015, 137(4): 042503.
Paper No: GTP-14-1356
DOI: https://doi.org/10.1115/1.4028662
Published Online: April 1, 2015
View Article titled, An Experimental Study of the Load-Orientation Sensitivity of Three-Lobe Bearings
Click here to open pdf in another window PDF for An Experimental Study of the Load-Orientation Sensitivity of Three-Lobe Bearings
Topics: Bearings, Stress
Proceedings Papers

An Experimental Study of the Load-Orientation Sensitivity of Three-Lobe Bearings

Rasish Khatri, Dara W. Childs
Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT32A006, June 16–20, 2014
Paper No: GT2014-25482
DOI: https://doi.org/10.1115/GT2014-25482
View Paper titled, An Experimental Study of the Load-Orientation Sensitivity of Three-Lobe Bearings
Click here to open pdf in another window PDF for An Experimental Study of the Load-Orientation Sensitivity of Three-Lobe Bearings
Topics: Bearings, Stress, Metals, Temperature, Stiffness, Clearances (Engineering), Damping, Dynamic testing (Engineering), Testing performance, Whirls
Proceedings Papers

An Experimental Investigation of the Dynamic Performance of a Vertical-Application Three-Lobe Bearing

Rasish Khatri, Dara W. Childs
Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT32A007, June 16–20, 2014
Paper No: GT2014-25483
DOI: https://doi.org/10.1115/GT2014-25483
View Paper titled, An Experimental Investigation of the Dynamic Performance of a Vertical-Application Three-Lobe Bearing
Click here to open pdf in another window PDF for An Experimental Investigation of the Dynamic Performance of a Vertical-Application Three-Lobe Bearing
Topics: Bearings, Stiffness, Stress, Clearances (Engineering), Damping, Stability, Whirls, Dynamic testing (Engineering), Journal bearings, Pumps