The super-critical carbon-dioxide (S-CO2) Brayton cycle is considered one of the most promising power conversion cycles because it can achieve very high efficiency at relatively low temperatures. Recent advancements in the development of turbomachinery, bearings, high speed alternators, compact high pressure heat exchangers, and advanced inexpensive power electronics make the SuperCritical Technologies PowerCube possible.

#### Intellectual Property

SuperCritical Technologies is committed to innovate and advance the state-of-the-art super-critical power cycles. To date, SuperCritical Technologies has pursued our vision through the following published patents and patent applications (external sites):

**Modular power infrastructure network, and associated systems and methods**

**Thermodynamic cycle with compressor recuperation, and associated systems and methods**

**Systems and methods for part load control of electrical power generating systems**

**Systems and methods for power peaking with energy storage**

#### Research Publications

Our **Chief Scientist, Steve Wright,** collaborates and publishes with the field’s major leaders. Selected supercritical power cycles research publications (external sites):

**“Bulk Energy Storage using a Supercritical CO2 Waste Heat Recovery Power Plant”**, in Proceedings of Supercritical CO2 Power Cycle Symposium, Pittsburgh, Pennsylvania, September 9-10, 2014, 14 pages. Wright S.A., Davidson C.S., Scammell, W.O.

**“Economic Issues for Waste Heat Recovery & Bulk Energy Storage”**, in Proceedings of Supercritical CO2 Power Cycle Symposium, Pittsburgh, Pennsylvania, September 9-10, 2014, 18 pages. Wright S.A., Davidson C.S., Scammell, W.O.

**“Summary of the Sandia Supercritical CO2 Development Program”**, in Proceedings of Supercritical CO2 Power Cycle Symposium, Boulder, Colorado, May 24-25, 2011, 16 pages. Wright S.A., Conboy Tom M., Parma Edward J., Lewis Tom G., Rochau Gary A. Suo-Anttila Ahti J.

**“Break-even Power Transients for two Simple Recuperated S- CO2 Brayton Cycle Test Configurations”**, in Proceedings of Supercritical CO2 Power Cycle Symposium, Boulder, Colorado, May 24-25, 2011, 31 pages. Wright S.A., Conboy T.M., Rochau G.E.

**“Computational Fluid dynamics Code for Supercritical fluids”**, in Proceedings of the Supercritical CO2 Power Cycle Symposium”, Boulder, Colorado, 2011, 8 pages. Suo-Anttila A.J. and Wright S.A.

**“Supercritical CO2 Direct Cycle Gas Fast Reactor (SC-GFR) Concept, In Proceedings of the Supercritical CO2 Power Cycle Symposium”**, Boulder, Colorado, May 24-25, 2011, 9 pages. Parma E.J., Wright S.A. Vernon M.E., Fleming D.D., Oohau G.E., Suo-Anttila A.J., Rashdan A., Tsvetkov P.V.

**“Supercritical CO2 Mixture Behavior for Advanced Power Cycles and Applications”**, In Proceedings of Supercritical CO2 Power Cycle Symposium, Boulder, Colorado, May 24-25, 2011, 2 pages. Lewis T.G., Conboy T.M., Wright S.A.

**“Experimental Investigation of the S-CO2 Condensing Cycle”**, In Proceedings of the Supercritical CO2 Power Cycle Symposium”, Boulder, Colorado, May 24-25, 2011, 14 pages. Conboy T.M., Wright S.A.

**“Scale Dependencies of Supercritical Carbon Dioxide Brayton Cycle Technologies and the Optimal Size for a Next-Step Supercritical CO2 Cycle Demonstration”**, in Proceedings of the Supercritical CO2 Power Cycle Symposium”, Boulder, Colorado, 2011, 5 pages. Sienicki J. J., Moisseytsev A., Fuller R. L., Wright S.A.

**“Operation and Analysis of a Supercritical CO2 Brayton Cycle”**, SAND2010-0171, September 2010, 45 pages. Wright S.A., Radel R.F., Vernon M.E., Rochau G.E., Pickard P.S.

**“Turbomachinery Scaling Considerations for Supercritical CO2 Brayton Cycles”**, DOE-letter GenIV level 3 report 12/31/2009, 13 pages. Wright S.A. Sienicki J.J., Moisseytesev A., Fuller R.L.

**“Initial status and test results from a SuperCritical CO2 Brayton Cycle Test Loop”**, in Proceedings of International Congress on Advances in Nuclear Power Plants, Anaheim, CA, USA, June 8-12, 2008, 8 pages. Steven A. Wright, Robert Fuller, Paul S. Pickard, Milton E. Vernon

**“SuperCritical CO2 Brayton Cycle Compression and Control Near the Critical Point”**, in Proceedings of International Congress on Advances in Nuclear Power Plants, Anaheim, CA, USA, June 8-12, 2008, 10 pages. Steven A. Wright, Robert Fuller, Jeff Noall, Ross Radel, Milton E. Vernon, and Paul S. Pickard

**“Dynamic System Analysis of a SuperCritical CO2 Compression Loop”**, in Proceedings of International Congress on Advances in Nuclear Power Plants, Anaheim, CA, USA, June 8-12, 2008, 7 pages.R.B. Vilim, S.A. Wright, M.E. Vernon, R.F. Radel, and P.S. Pickard

**“Impact of Closed Brayton Cycle Test Results on Gas Cooled Reactor Operation and Safety”**, in Proceedings of International Congress on Advances in Nuclear Power Plants, Nice, France May 13-18, 2007, 9 pages. S.A. Wright and P.S. Pickard

**Closed Brayton Cycle Power Conversion Systems for Nuclear Reactors, Modeling, Operations, and Validation**, SAND2006-2518, Sandia National Laboratories, Albuquerque, NM, 2006, 257 pages. S. A. Wright,. J. Lipinski, et. al.

**“Self-Driven Decay Heat Removal in a GCR Closed Brayton Cycle Power System”**, in Proceedings of International Congress on Advances in Nuclear Power Plants, June 4-8, 2006, 9 pages. S. A. Wright and R. J. Lipinski

**“Operational Curves for HTGR’s Coupled to Closed Brayton Cycle Power Conversion Systems”**, in Proceedings of International Congress on Advances in Nuclear Power Plants, June 4-8, Reno, 2006, 8 pages.S. A. Wright, and R. J. Lipinski

**“Operational Results of a Closed Brayton Cycle Test-Loop”**, Proceedings of Space Technology and Applications International Forum (STAIF-2005), pg 699 Albuquerque, New Mexico February, 2005, 12 pages.S. A. Wright, Robert Fuller, et. al.

**“Dynamic Modeling and Control of Nuclear Reactors Coupled to Closed-Loop Brayton Cycle Systems using Simulink”** in Proceedings of Space Technology and Applications International Forum (STAIF-2005), February, 2005, 14 pages.S. A. Wright and T. Sanchez

**“Preliminary Results of Dynamic System Model for a Closed-Loop Brayton Cycle Coupled to a Nuclear Reactor”**, in Proceedings 1st International Energy Conversion Engineering Conference, 17 – 21 Portsmouth, VA, Aug. 17-21, 2003, 12 pages. Wright S.A.

**Modeling and experimental results for condensing supercritical CO2 power cycles.**SA Wright, RF Radel, TM Conboy, GE Rochau – 2011 – SANDIA REPORT SAND2010-8840

**Description and Test Results from a Supercritical CO2 Brayton Cycle Development Program** SA Wright, PS Pickard, ME Vernon, RF Radel

**Non‐Nuclear Validation Test Results of a Closed Brayton Cycle Test‐Loop**, AIP Conf. Proc. 880, pp. 157-166; 10 pages. Space Technology and Application International Forum-STAIF 2007