I am a great fan of this Cyclone engine. There is also similar emergencing technology that uses super critical carbondioxide instead of super critical water. The main benefit of going into super critical is that the efficiency can go up to 46% for heat engine. And also with carbon dioxide temperatures can be as low as 250-300 °C.
*Supercritical Carbon Dioxide Brayton Cycle Turbines Promise Giant Leap in Power Generation* ScienceDaily (Mar. 4, 2011) — *Sandia National Laboratories researchers are moving into the demonstration phase of a novel gas turbine system for power generation, with the promise that thermal-to-electric conversion efficiency will be increased to as much as 50 percent -- an improvement of 50 percent for nuclear power stations equipped with steam turbines, or a 40 percent improvement for simple gas turbines. The system is also very compact, meaning that capital costs would be relatively low.* http://www.sciencedaily.com/releases/2011/03/110304090459.htm This water based Cyclone engine should be in every aspect (moving parts, friction, noise, vibrations, efficiency, weight, pollution, and waste motor oil) at least twice if not thrice as good as traditional internal combustion engine. If someone would invent an internal combustion engine today, it would be ridiculed as impossible, due to unsurpassing material and engineering challenges. External combustion or electric engines are just way too much simple and easy technologies compared to to internal combustion engines. –Jouni
