NETL researchers are studying supercritical CO2 power cycles to improve thermal efficiency and alleviate adverse environmental impacts of using fossil fuels to generate power—work they hope will someday result in zero emissions and record-breaking efficiencies. This work features a special type of combustion known as oxyfuel combustion (or oxycombustion), in which oxygen rather than ambient air is used to combust fuel. The resulting flue gas is composed of highly concentrated, or supercritical, CO2.
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