Hybrid turboshaft power system and method based on supercritical carbon dioxide

Abstract

The invention discloses a hybrid turboshaft power system and method based on supercritical carbon dioxide, and belongs to the field of new energy and high efficiency power. The system mainly includesa compressor, a combustion chamber, a turbine, a heat storage tank, an S-CO2 gas storage tank, a solid fuel storage tank, a chemical reactor, a heat exchanger, a carbon dioxide buffer tank, a carbon dioxide exhaust storage tank, a cyclone separator and a solid powder recovery tank. The hybrid turboshaft power system and method are characterized in that with the help of the supercritical property and high energy storage density of the carbon dioxide, the strong power capability can be generated after heating; the S-CO2 needs to be properly heated before work doing, and one heat source can be selected from heat of tail gas of a conventional gas turbine; and the heat storage tank is used for realizing storage and release of energy, and the temperature of the exhausted tail gas can be reduced;as for preparation of the S-CO2, the S-CO2 can be produced in advance at the grid load low ebb period, and therefore an auxiliary power system can work without the aid of the compressor. The system can reduce infrared radiation, can reduce use of traditional fossil energy, and has high environmental protection.

Description

Technical field [0001] The invention discloses a hybrid turboshaft power system and method based on supercritical carbon dioxide, and belongs to the field of new energy and high-efficiency power. Background technique [0002] The traditional turboshaft power system is an open power output system, so the design of the intake duct is complicated and difficult. In the event of sand, dust or hail and other weather, the particles in the airflow must be gathered together and separated from the air and discharged outside the machine. Create a good air intake environment for the compressor to work stably. [0003] Another problem with traditional turboshaft power systems is that about 5% of high-temperature gas is ejected outward. The heat flow discharged from the system will produce strong infrared radiation; the common solution is to suck in the outside air, mix it with the high-temperature gas and cool it out. [0004] Carbon dioxide is non-toxic, has good physical and chemical properti...

AI Technical Summary

Problems solved by technology

[0003] Another problem with the traditional turboshaft power system is that about 5% of the high-temperature gas is sprayed out

Images