VAST Power Systems, Inc., Chicago, IL, US
VAST® patented power cycles control combustion and recover exhaust heat by steam and hot water. VAST displaces ~90% of excess combustion cooling air, cutting compressor size by ~60%. These boost 100 MWe efficiency by 40% (to 52%), increasing with pressure. They boost net power by ~75-104% thru the same expander area at pressure ratios of 40 to 80. Efficiency increases with steam-water fraction at higher pressures. Modular Once Through Steam Generators (OTSGs) improve reliability, heat recovery, efficiency while reducing installation costs. Direct contact condensors recover net potable water for sale, while cleaning intake dust and exhaust particulates. Lab experiments of VAST’s “wet” combustion confirmed ultra clean emissions predicted by models. VAST’s next generation combustors appear scalable across wide ranges of pressure and size. They should reduce emissions >90% to California emission standards (sub ppm NOx and CO, UHC, particulates) without catalysts, ammonia or urea, up to 1500 ℃ class turbines or higher. Wet compression may cut exit temperature increase by >70%, cutting compression power by 27%, reducing tip gap and boosting compressor efficiency. Distributed delivery dramatically quiets combustion noise (~30 dB). Operating methods offer standby spinning reserve, the fastest power transient response and startup (<10 minutes), boosting grid stability.
Primary Application Area: Energy, Efficiency, Resilience
Technology Development Status: Concept
Technology Readiness Level: TRL 3
Vetted Programs/Awards: VASTech was vetted by United Technology Research Corp, and recommended to Pratt & Whitney’s Board. One Engineering Procurement Construction multinational’s Board wants to market VASTech when it is scalable. VAST’s US Patents have 1148 forward citations. Ocean Tomo rated 4 VAST patents as outstanding with 152 to 243 IPQ scores.
Organization Type: Early-mid-stage Startup
Showcase Booth #: 51T
GOVT/EXTERNAL FUNDING SOURCES
External Funding to Date: $600,000 from Limited Partners + >$8.5 million from VASTeam™ themselves ($6.5 MM cash + >$2 MM in unpaid labor)