The invention discloses a
system and a method for transcritical
carbon dioxide power generation through the utilization of a gas-liquid separator and an ejector. The
system comprises the gas-liquid separator, a
compression pump, a compressor, a regenerator, a heater, a
turbine, the ejector, a cooler and the expansion
machine, wherein the
compression pump is used for pressurizing and outputting a liquid-phase working medium; the compressor is used for pressurizing and outputting a gas-phase working medium; the regenerator is used for back-heating the working medium pressurized and outputted by the
compression pump by utilizing the heat of a working medium outputted by the
turbine; the heater is used for heating the working medium outputted from a cold flow outlet of the regenerator to a preset temperature; the
turbine is used for driving a power generator to generate
electricity; the ejector is used for pressurizing the working medium outputted from a
heat flow outlet of the regenerator by utilizing the working medium pressurized and outputted by the compressor; the cooler is used for cooling a fluid of the working medium pressurized and outputted by the ejector; and the expansion
machine is used for doing work by utilizing the expansion of the working medium outputted from a
heat flow outlet of the cooler. According to the
system for transcritical
carbon dioxide power generation, the condensation cost of the system can be reduced; and meanwhile, the circulation efficiency of the system can be improved.