Abstract
Supercritical carbon dioxide power cycle (S-CO2) is a promising technology in comparison to the conventional Rankine cycle for power conversion. However, the waste heat from the turbine outlet is not well utilized. Zeotropic Organic Rankine cycle (ORC) recovering waste heat is an advanced heat-to-power conversion method. Novel composition adjustment zeotropic ORC has advantages over ORC using fixed mixture components in the power generation performance. The present study proposed a novel S-CO2 power cycle combined with composition adjustment zeotropic ORC. Thermodynamic performance investigation and a mathematical model of the novel cycle are developed. Finally, an example is given to verify the method. The results show that this method can improve the thermal performance. Novel system thermal efficiency can be improved by 1.83% compared with the basic S-CO2.
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