Pilot Plant Advances Supercritical CO2 Power Cycles for Gas-Fired Generation

By Timothy C. Allison, Ph.D., Southwest Research Institute (SwRI), San Antonio, TX Power cycles utilizing supercritical carbon dioxide (sCO2) as a working fluid show promise for many power generation applications, including high-efficiency waste heat recovery on pipeline gas turbines.  Figure 1: Simple recuperated cycle configuration at STEP pilot plant. (Images: SwRI) Component development efforts for commercializing these power cycles have progressed rapidly in recent years, and the technology is poised for demonstration at the 10-MWe scale at the Supercritical Transformational Electric Power (STEP) pilot plant that is nearing completion. These power cycles show promise to impro

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