Supercritical CO2 Power Cycles - The 7th International Symposium

Proceedings of the 8^th International sCO₂ Power Cycles Symposium

The 8^th International sCO₂ Power Cycles Symposium was held February 26–29, 2024, in San Antonio, Texas. The following papers and/or presentations were presented at the symposium. They are grouped by session.

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Keynotes, Panel Sessions, Tutorials

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Pre-Conference Tutorial Sessions

sCO₂ Power Cycles Fundamentals Tutorial
Jason Wilkes, Southwest Research Institute

sCO₂ Cycles Tutorial
Tim Held Echogen Power Systems
Doug Hofer, Southwest Research Institute

sCO₂ Oxy-Combustion Tutorial
Steve White, Southwest Research Institute

sCO₂ Turbomachinery Tutorial
Jeff Moore, Southwest Research Institute

sCO₂ Materials for Supercritical CO₂ Applications Tutorial
Prof. Henry Saari – Carleton University
Steven Kung – Electric Power Research Institute
Ganesan Subbaraman – GTI Energy

Heat Exchangers for Supercritical CO₂ Power Cycle Applications Tutorial
Cole Replogle, Southwest Research Institute
Renaud Le Pierres, (Parker Hannifin)
Marc Portnoff, Thar Energy, LLC

Keynote Presentation

Karl Wygant, Elliott Ebara Energy

Matt Bauer, DOE-EERE

Chris Clements, Tokamak Energy Ltd. / Jake Acres, UKAE

Chris Fraughton, MAN Energy Solutions

Don Stevenson, GTI Energy

Dr. Young Jae Choi, Hyundai Engineering Co. LTD

Panel Sessions

Panel Session I: Industry Panel – Turbomachinery Manufacturers

Panel Session II: Applications & End Users

Panel Session III: International

Guillermo Paniagua, Purdue University
Lorenzo Cosi, Baker Hughes

Rafael Gúedez, KTH
Jeong Ik Lee, KAIST
Doug Hofer, Southwest Research Institute

Panel Session IV: High-level DOE

Panel Session V: University R&D

John DeBarbadillo, Special Metals
Doug Hofer, Southwest Research Institute
Jeong Ik Lee, KAIST
Subith Vasu, University of Central Florida
David Sanchez, University of Seville

Panel Session VI: Industrial/National Labs

Aramis Cook, CiTech
Logan Rapp, Sandia National Labs
Renaud Le Pierres, Heatric (Parker Hannifin)
Andrew Fry, BYU

Fast Pitch

Bearings & Seals

Paper # 33 – Development of a Dry Gas Seal for high-temperature supercritical carbon dioxide (sCO₂) turbines
Thomas Kerr, Southwest Research Institute
Presentation

Paper # 112 – Experimental Demonstration of a Novel Supercritical CO₂ Seal Concept on a 2" Static Test Rig
Sevki Cesmeci, Georgia Southern University

Paper # 45 – Bearingless Motor/Generator Opportunities in sCO₂ Power Cycles
Nathan Petersen, University of Wisconsin-Madison
Presentation

Paper # 50 – Preliminary Sizing of Active Magnetic Bearings for sCO₂ Waste-Heat Recovery Application
Robert Lipham, Southwest Research Institute
Presentation

Paper # 107 – Design of a Permanent Magnet Biased Homopolar Magnetic Bearing for sCO₂ Turbine Applications
Robert Lipham, Southwest Research Institute
Presentation

Compressors

Paper # 44 – Experimental Demonstration of an Advanced CO₂ Axial Compressor for CO₂-based Power Cycles and Energy Storage Systems
Jeongseek Kang, University of Notre Dame
Presentation

Paper # 37 – Experimental and Numerical Performance Evaluation of a Modified sCO₂ Compressor Blade Profile to Reduce Leading Edge Condensation
Erik Fernandez, University of Central Florida
Presentation

Paper # 70 – Design and Optimization of a 3-Stage Axial Supercritical CO₂ compressor using CFD
Mark Turner, University of Cincinnati
Presentation

Paper # 20 – A Method to Develop Centrifugal Compressor Performance Maps for Off-Design and Dynamic Simulation Studies of sCO₂ Cycles
Colin du Sart, University of Cape Town
Presentation

Heat Exchangers

Paper # 12 – Efficiency and Scale Improvements to Supercritical CO₂ Power Block
Richard Huntington, Powerful Heat Transfer Solutions
Presentation

Paper # 73 – Experimental Demonstration of a Coal Fired Primary Heat Exchanger in a sCO₂-based Power Cycle
Kyle Sedlacko, Echogen Power Systems
Presentation

Paper # 114 – Technical feasibility analysis and thermo-mechanical modelling of a high-temperature solar receiver and a shell and tube heat exchanger for next-generation CSP plants
David Sanchez, University of Seville

Paper # 4 – Increasing Main Cooler Thermal Performance for sCO₂ Power Cycles
Matthew Searle, NETL Support Contractor
Presentation

Paper # 18 – Experimental Characterization of Additively Manufactured Heat Exchangers For Supercritical Carbon Di-Oxide Cycles
Erfan Rasouli, University of California Davis

Paper # 31 – The Experimental and Numerical Investigation of Internal Heat Transfer for Supercritical Carbon Dioxide Cooling in a Staggered Pin Fin Array and Single-Jet Impingement
Emmanuel Gabriel-Ohanu, University of Central Florida
Presentation

Heat Transfer & Properties

Paper # 13 – Visualizing the Turbulent Heat Transfer of Horizontal sCO₂ Flows
Marko Draskic, TU Delft

Paper # 51 – Correlational Model for Heat Transfer Coefficient of Solid Particle-to-CO₂ Moving Bed Heat Exchangers with Finned-Tubes
Luke Magyar, Echogen Power Systems
Presentation

Paper # 67 – Heat Transfer Experiments of Ribbed, Serpentine Cooling Passages with Supercritical CO₂
Michael Marshall, Southwest Research Institute
Presentation

Paper # 27 – Study on the initial position of Taylor vortex for Taylor-Couette-Poiseuille flow formed by supercritical carbon dioxide
Fengxiong Lu, University of Chinese Academy of Sciences
Presentation

Materials

Paper # 63 – High-Temperature Creep and Creep-Fatigue Performance of Stainless Steel 316 Diffusion Bonds
John Shingledecker, EPRI
Presentation

Paper # 89 – High-Temperature Oxidation Behavior of Wrought and Additive Manufactured Alloys in Direct-Fired Supercritical CO₂ Power Cycle Environments
Casey Carney, Department of Energy – NETL
Presentation

Paper # 113 – Coated and Uncoated Steel Compatibility in Supercritical CO₂ at 450°-650°C
Bruce Pint, ORNL
Presentation

Paper # 2 – Experience in Manufacturing Pipe and Fittings from INCONEL alloy 740H for Demonstration Facilities for sCO₂ Service
John deBarbadillo, Special Metals
Presentation

Paper # 57 – Testing of Materials and Coatings at up to 1150°C and 300 bar for use in Oxy-Combustion Turbine
Florent Bocher, Southwest Research Institute
Presentation

Modeling & Control

Paper # 10 – ARC-100 Plant Simulator
Anton Moisseytsev, Argonne National Laboratory

Paper # 59 – Evaluation on the rapidity of sCO₂ cycle power up and down events using the STEP dynamic simulation model
Michael McDowell, GTI Energy
Presentation

Paper # 71 – Simple Cycle Test Validation of the STEP Dynamic Simulation Model
Darryl Hino, GTI Energy
Presentation

Paper # 5 – Evaluation of S-CO₂ Compressor Inlet Temperature Controllers
Gihyeon Kim, KAIST
Presentation

Paper # 25 – Multi-Model Predictive Control for Enhanced Load Following of a sCO₂ Recompression Brayton Cycle
Jacob Albright, Department of Energy – NETL
Presentation

Systems

Paper # 38 – Modeling and Economic Analysis of sCO₂ Power Systems Hybridized with a Gas Turbine
Joshua Schmitt, Southwest Research Institute
Presentation

Paper # 32 – Performance and Economic Evaluation of sCO₂ Bottoming Cycles for Natural Gas Combined Cycle Plants with Carbon Capture
Sandeep Pidaparti, Department of Energy, KeyLogic/NETL
Presentation

Paper # 47 – Annual Performance Profiles of CO₂-Plume Geothermal (CPG) Systems: Impact of the Ambient Conditions
Christopher Schifflechner, Technical University of Munich
Presentation

Paper # 52 – Simultaneous Design Optimization of binary CO₂-mixture-based transcritical power cycles for Concentrated Solar Power Applications
Balkan Mutlu, Teesside University NZIIC

Paper # 78 – Analysis and optimization of the recompression cycle with high-temperature recuperator bypass for concentrating solar power applications
Taylor Brown, Department of Energy – NREL
Presentation

Paper # 85 – Preliminary Results of the EU SolarSCO₂OL Demonstration Project: Enabling the Integration of Supercritical CO₂ Power Blocks into Hybrid CSP-PV Plants
Salvatore Guccione, KTH Royal Institute of Technology
Presentation

Paper # 108 – Integrated Thermal Energy Storage and Brayton Cycle Equipment Demonstration (Integrated Testbed) Project Design Basis
Masih Jorat, Heliogen Holdings LLC
Presentation

Paper # 1 – Long-term Performance Analysis of Supercritical Cycles in Complex Industrial Environments under Semi-Transient Conditions
Vincent Thielens, University of Mons

Paper # 14 – sCO₂ Waste Heat Recovery System Evaluation for Steelmaking Process
Ladislav Vesely, University of Central Florida
Presentation

Paper # 22 – sCO₂ Waste Heat Recovery System for Turbofan Engine – System Optimization and Component Design
Claire-Phonie Bury, University of Central Florida
Presentation

Paper # 61 – High temperature CO₂ heat pumps for industrial process heat applications
Timothy Held, Echogen Power Systems
Presentation

Paper # 26 – Thermodynamic Evaluation of a Refrigeration Bottoming Cycle on the Efficiency of a Condensing Supercritical Carbon Dioxide Power Cycle
Phalgun Malupillai, TerraPower

Paper # 64 – Technoeconomic Analysis of Low Temperature Reservoir Technologies for sCO₂ based Pumped Thermal Energy Storage
Vamshi Avadhanula, Echogen Power Systems
Presentation

Testing

Paper # 8 – Design of a sCO₂-based Pumped Thermal Energy Storage (PTES) test rig integrated with industrial waste heat recovery
Simone Maccarini, Università di Genova
Presentation

Paper # 48 – sCO₂ Power Cycle Prototype using Thermal Energy Storage
David Stapp, Peregrine Turbine Technologies, LLC
Presentation

Paper # 104 – Design of a High-Temperature Test Facility for an Additive Manufactured Supercritical Carbon Dioxide Turbine
Anthony Grotjan, UW-Madison Solar Energy Laboratory
Presentation

Paper # 103 – Design and Construction of a 1 MWth sCO₂ Thermal Loop Heated by Particle-Based Concentrating Solar Power
Hendrik Frederik Laubscher, Sandia National Laboratories
Presentation

Paper # 100 – Investigation of high-pressure CO₂-diluted methane/oxygen jet flame stabilization and laser-induced plasma kernel formation
Francesco Di Sabatino, Southwest Research Institute

Paper # 74 – The STEP 10 MWe sCO₂ Pilot Installation and Commissioning Status Update
William Follett, GTI Energy
Presentation

Paper # 94 – Commissioning and Simple Cycle Testing of the STEP Main Compressor
Michael Kutin, GTI Energy
Presentation

Paper # 98 – Controls and Data Acquisition Systems Architecture for the DOE STEP 10 MWe Pilot Scale sCO₂ Power Plant
Craig Nolen, Southwest Research Institute
Presentation

Turbines

Paper # 6 – S-CO₂ radial turbine testing data and performance map for thermodynamic conditions with strong real gas effect
Seungkyu Lee, KAIST
Presentation

Paper # 102 – Blade and Rim Seal Design of a First Stage High Pressure Turbine for a 300 MWe Supercritical CO₂ Power Cycle
Logan Tuite, Purdue Experimental Turbine Aerothermal Laboratory
Presentation

Paper # 105 – Blade and Rim Seal Design of a First Stage High Pressure Turbine for a 300 MWe Supercritical CO₂ Power Cycle
Jeff Moore, Southwest Research Institute
Presentation

Posters

Poster # 7 – Impact of the Thermodynamic Property Method Choice on the Thermodynamic Performance, Preliminary Component Design and Process Optimization of the NET Power Cycle
Ivan Velazquez, University of Valladolid

Poster # 11 – Testing of Supercritical CO₂ Centrifugal Compressors for 1MWe Power Cycle
Yuming Zhu, Institute of Engineering Thermophysics, Chinese Academy of Sciences

Poster # 19 – Additively-Manufactured High-Flux Micro-Pin Array Receiver Panels for High-Pressure Fluids
Vinod Narayanan, University of California Davis

Poster # 28 – Effects of Near-critical Inlet Condition on the Performance of Supercritical CO₂ Compressor
Wenlin Xie, Institute of Engineering Thermophysics, Chinese Academy of Sciences
Paper

Poster # 29 – Static and Transient Characteristics of a Microchannel Two-phase Looped Thermosyphon Cooler for the sCO₂ Brayton Cycle
Liqi Yu, Institute of Engineering Thermophysics, Chinese Academy of Sciences
Paper

Poster # 30 – Towards the design of a supercritical combustion chamber for combusting H2 in sCO₂ and sXe
Sylwia Oles, University of Twente
Paper

Poster # 41 – Materials compatibility in supercritical CO₂ environments applicable to power generation systems
Bonnie Antoun, Sandia National Laboratories

Poster # 42 – Comparative analysis of supercritical CO₂ cycles
Badyda Krzysztof, Sandia National Laboratories
Paper

Poster # 49 – Pressure Actuated Shaft Seal Development for sCO₂ Application
Clayton Grondahl, CMG Tech LLC
Paper

Poster # 60 – Steady State Modeling for the 10 MWe sCO₂ Test Facility Program
Wade Mao, GTI Energy
Paper

Poster # 66 – Methane and Natural Gas Combustion and Ignition Measurements for SCO₂ Allam Cycles
Cory Kinney, University of Central Florida

Poster # 72 – Thermodynamic Analysis of sCO₂ Energy Storage System
Cory Kinney, University of Central Florida

Poster # 76 – Installation and Commissioning of the Gas Fueled Heater for the STEP sCO₂ Demonstration Pilot Plant
Patrick Bishop, GTI Energy

Poster # 79 – Micro-PIV measurements and visualization of the flow of CO₂ near critical conditions inside the microchannel
Ritesh Ghorpade, University of Central Florida

Poster # 83 – Evaluation of Materials and Coatings for Use in High Temperature CO₂ Environments
Jianliang Lin, Southwest Research Institute

Poster # 84 – Theoretical study on windage loss characteristics of supercritical carbon dioxide in a rotating axis cavity
Chaohong Guo, Institute of Engineering Thermophysics, Chinese Academy of Sciences
Paper

Poster # 95 – Thermomechanical Analysis of Printed Circuit Heat Exchangers for Optimization of Supercritical CO₂-based Power Cycles in Concentrated Solar Power
Christopher Hyland, University of Dayton
Paper

Poster # 99 – Transient oscillation phenomena during cool, pressurized start-up of sCO₂ compressor
Craig Nolen, Southwest Research Institute

Poster # 109 – Design of SCO₂ System Test Rig
Hu Yifeng, Shanghai Turbine Works Company

Poster # 111 – Thermodynamic Analysis of Five Allam sCO₂ Power Cycle Configurations
Duoli Chen, University of Pennsylvania
Paper

Poster # 115 – Development of ZEUS – Zero – Emission Unmanned power Station
Kjartan Pedersen, Aker Solutions AS
Paper

Poster # 116 – Optimization of CO₂ injection, used as a cooling agent, into a prototype high-pressure combustor for H2 oxy-combustion in sCO₂
Jakub Mularski, Wrocław University of Science and Technology
Paper

Proceedings of the 8th International sCO2 Power Cycles Symposium