Supercritical carbon dioxide energy storage in the united states

What is the supercritical carbon dioxide technology R&D program?

The Supercritical Carbon Dioxide Technology R&D program consists of developing turbomachinery and recuperators for indirect- and direct-fired cycles, oxy-fuel combustion for direct-fired cycles, and system integration and optimization of the supercritical CO power cycle. The program aims to

What is a supercritical CO2 (sCO2) power cycle?

Supercritical CO2 (sCO2) power cycles are gaining broad interest due to the unique features of sCO2. When carbon dioxide (CO2) is held above its critical temperature and pressure, it acts like a gas yet has the density of a liquid.

What is a supercritical co power cycle?

The supercritical CO power cycle uses small turbomachinery, 2 is fuel- and/or heat-source neutral, and is eficient. These factors make the cycle appealing to a wide range of applications and stakeholders. In addition to solar, nuclear, fossil, and geothermal heat sources, the supercritical CO power cycle has

Why is CO2 a supercritical fluid?

Carbon dioxide (CO2) is a supercritical fluid because it acts like a gas yet has the density of a liquid when held above its critical temperature and pressure. In this state, small changes in temperature or pressure cause dramatic shifts in density, making sCO2 a highly efficient working fluid to generate power.

Which PTEs variant uses supercritical carbon dioxide as the working fluid?

In this article, a PTES variant that uses supercritical carbon dioxide (sCO2) as the working fluid is introduced. sCO2-PTES cycles have higher work ratios and power densities than the systems based on ideal gases that have been investigated to date.

What are the DOE offices working on sCO2 power cycles?

Three DOE Offices (Nuclear Energy, Fossil Energy, and Energy Efficiency and Renewable Energy) are working together to reduce the technical hurdles and support foundational research and development of sCO2 power cycles.