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Supercritical CO2

Concepts NREC  Knows Supercritical CO2

Supercritical Carbon Dioxide (sCO2) Brayton Cycle energy conversion systems have the potential to provide the world with cleaner and more affordable power.

Today, coal, nuclear, gas, and concentrating solar energy plants use the Rankine Cycle (steam and water) to convert heat energy to electricity. The sCO2 Brayton cycle has the potential to reach thermal efficiencies much greater than the Rankine cycle. Capital costs of the turbomachinery can also be lower because the high density of the sCO2 requires smaller turbomachinery.

Primary Cycle Efficiency (without cogeneration):

  • Old Rankine Cycle Plants – low 30 percent
  • Newer plants – Mid 30% to mid 40%
  • sCO2 Brayton cycle – potentially greater than 50%. It also significantly reduces water usage due to the reduction in the heat rejected from the cycle.

Interest in this technology is high, and governments, including the U.S. Department of Energy (DOE), are funding research to support the commercialization of this promising new technology. Concepts NREC has been awarded two Small Business Innovation Research grants (SBIRs) to help solve the many technical challenges involved in bringing sCO2 technology to the market.

The areas that Concepts NREC is working on to help solve some of the technical challenges of sCO2 power generation are: Improving Efficiency and Reducing Costs for the Supercritical C02 Design Process, optimizing the choices for the recuperator effectiveness vs. turbomachinery efficiencies that can be economically achieved and Magnetic Bearings for Supercritical CO2 Service.

Concepts NREC, as the experts, works with clients to design and analyze the types of turbomachinery required for an efficient sCO2 system. Are you ready to start the conversation about your sCO2 needs? Contact us

Below are some sCO2 resources we hope you find useful: