Scale Dependencies of Supercritical Carbon Dioxide Brayton Cycle Technologies and the Optimal Size for a Next-Step Supercritical CO2 Cycle Demonstration

by James J. Sienicki1, Anton Moisseytsev2, Robert L. Fuller3, Steven A. Wright4, & Paul S. Pickard4
1Argonne National Laboratory
2Argonne National Laboratory
3Barber-Nichols Inc.
4Sandia National Laboratories

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An assessment has been performed of the scale dependencies of technologies and features of S-CO2 Brayton cycle power converters. Each feature or technology is considered over a range of cycle electrical power output from the current small scale up to 300 MWe. It is found that for a system size of about 10 MWe that nearly all of the features and technologies prototypical of a full-size system could be incorporated into a next-step demonstration of the S-CO2 Brayton cycle.