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45 mins
Overview of supercritical carbon dioxide based power cycles for stationary power generation
Richard Dennis
Session: Keynote lecture by Richard A. Dennis
Session starts: Wednesday 13 September, 09:15
Presentation starts: 09:15

Richard Dennis (U.S. Department of Energy)

Supercritical carbon dioxide (SCO2) based power cycles can offer higher efficiencies than the steam turbine Rankine cycle and are therefore of significant interest for power generation. A lower capital cost potential and the compounding performance benefits from a more efficient thermodynamic cycle on balance of plant requirements, fuel use and emissions add to this interest. The applicability of this cycle to many heat sources provides additional incentives for development. Other unique features including applicability to dry cooling (lower water use), high power density turbo machinery, relatively benign characteristics of CO2, and adaptability to multiple thermodynamic cycle configurations including the directly heated oxy-fuel combustion Allam Cycle further support this broad range of applications and interest. Fundamentally these potential benefits are driven by the properties of SCO2 and the ability to configure efficient cycles for various heat sources. The presentation will provide an overview of the fundamentals that lead to cycle benefits, cycle configurations for fossil energy applications, other relevant cycle applications, technical challenges, and technology readiness levels of relevant components.