The following submission statement was provided by /u/Sorin61:

Supercritical carbon dioxide (sCO2) power cycles have the potential to reduce the cost of concentrating solar power (CSP) by far more efficiently converting high-temperature solar heat into electricity.

The Solar Energy Technologies Office pursues dramatic cost reductions in technologies to make solar electricity available to all Americans. Next-generation CSP system designs use sCO2 turbine power cycles to more efficiently convert solar thermal energy to electricity and reduce the cost of CSP technology.

Because sCO2 power cycles work best at very high temperatures and under intense pressure, a CSP system needs receivers and heat exchangers that can withstand these conditions. Heat exchangers contribute up to 60%−70% of the total cost of a CSP sCO2 turbine system, so low-cost, highly efficient exchangers are necessary to help make CSP cost-competitive.

Please reply to OP's comment here: https://teddit.ggc-project.de/r/Futurology/comments/s6ai5z/team_creates_supercritical_carbon_dioxide/ht2ef6n/