Scientists use supercritical carbon dioxide to power the grid
When it comes to turning turbines, steam is out and supercritical carbon dioxide is in – as demonstrated by Sandia National Labs when it connected a closed-loop system to the local grid, supplying 10 kilowatts of power for nearly an hour.can get far hotter than steam, and could be far more efficient if scaled to power plant levels and heated via nuclear, solar or fossil fuels.
"It took us a long time to get the data needed to let us connect to the grid. Any person who controls an electrical grid is very cautious about what you sync to [it], because you could disrupt the grid," Fleming said.The Brayton cycle is a thermodynamic alternative to the Rankine cycle, which evaporates water to form steam used to turn turbines.
Prior to connecting its Closed Brayton-cycle test loop to the grid in April, Sandia had to find the right control system to regulate its output, and the team found it in an elevator component called a permanent magnet rotor.
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