INFLUENCE OF DOPANT FLUORINATION ON THE HEAT TRANSFER BEHAVIOUR OF CO2-BASED MIXTURES IN TRANSCRITICAL POWER CYCLES

CO2-based mixtures are recognized to be an effective working fluid to overcome the limitations of pure sCO2 cycles for power production in high-temperature environments. Based on the temperature level of the heat source, several dopants, characterized by high critical temperature, can be adopted for blending CO2. As thermal stability is one of main concern in the working fluids selection, fluorinated compounds have