http://breakingenergy.com/2014/11/24/supercritical-carbon-dioxide-power-cycles-starting-to-hit-the-market/
This is pretty good stuff. The early issue that I had heard about was the sCO2 dissolving lube oil from the bearings. I suspect they have better bearings now, and have solved the early issues. Your comments? Calculations?
I have made most of my living dealing with water treatment in steam plants, or something related to that. All of that can easily be done away with now, along with all the water treatment associated costs.