Proceedings - SCO2 Oxy-Combustion Working Group

SCO₂ Oxy-Combustion Working Group
Meeting Minutes
February 27, 2018
Presentation by Dr. Jacob Delimont

Presentation

• Dr. Jacob Delimont – Southwest Research Institute (SwRI)
• Title: “High Inlet Temperature Combustor for Direct Fired Supercritical Oxy-Combustion”
• Presented an update on work on this project to design, build, and test an oxy-combustor
  • NETL-funded project - Awarded Phase I in 2014, Phase II in 2016
  • Mark Freeman is Federal Project Manager
  • Presentation covered:
    • Project objectives
    • Results / Conclusions from testing at Thar Energy
    • Combustor design
    • Test loop design
    • Future work
  • Highlights:
    • 1 MW-scale; 200 bar; 1600C max temperature
    • Combustor conceptual design was shared
    • Partially pre-mixed swirl stabilized combustor
    • Combustor planned for testing in reconfigured SunShot loop at SwRI
    • Mechanical design, aerothermal design and results of simulations presented

Q&A

Q&A followed the presentation, with some highlights below of Jacob’s responses to the questions:

• Georgia Tech is a project partner, for optical diagnostics. Plan to build optical access to the combustor.
• Will provide gas sampling along the length of the combustor.
• Can also sample downstream of the combustor.
• Pressure in test loop set by control valve.
• Presented multiple possible combustor concepts.
  • Will be using the partially pre-mixed swirl stabilized combustor concept going forward.
• Materials challenges associated with the sCO₂ fluid.
  • Vendors for valves, instrumentations, etc.
  • Proper seals that can handle sCO₂ at these conditions.

General Discussion

• Asked for any feedback on the meeting process.
  • Positive feedback – no recommendations for changes to format
• Meetings will continue on a bi-monthly basis via web-ex/phone platform.
• 6th International Symposium on SCO₂ Power Cycles coming up in Pittsburgh on March 27-29
  • Opportunity to discuss oxy-combustion topic further
  • Sessions in agenda on oxy-combustion
  • Since there is already a session devoted to oxy-combustion planned for the symposium it was determined to be unnecessary to organize a separate group meeting at the event.
• TurboExpo coming up in Oslo, Norway
  • Seth Lawson is in discussions with Robin Ames and Eric Clementoni to explore options for organizing a panel to discuss the path forward and the industry perspective on oxy-combustion.

Planning Discussion for Future Meetings
Discussion on planning future meetings:

• Next meeting will be April 24, 2018 from 1pm-3pm EDT
  • Includes 2 presentations
  • Dr. Subith Vasu – University of Central Florida
  • Dr. Wenting Sun – Georgia Tech
  • Each will present on their NETL-funded University Turbine Systems Research (UTSR) projects.
• If anyone is interested in volunteering to present at future working group meetings, please email seth.lawson@netl.doe.gov