Current research status and development of power generation applications of CPGS at home and abroad
CPGS combines the advantages of CO2 geological storage and deep geothermal development technologies to achieve the geo-logical storage of CO2 while mining geothermal energy,thereby achieving a combination of greenhouse gas emission reduction and renew-able energy utilization technology,and minimizing CO2 emissions to the greatest extent possible.In this paper,the enhanced geothermal system and CO2 plume geothermal system were introduced,and the advantages and disadvantages of water and CO2 as heat transfer working fluids were compared and analyzed.At the same time,the research status of CO2 plume geothermal system at home and abroad and the research needs to be improved were introduced in detail.In the end,three kinds of CO2 plume geothermal system power genera-tion application technologies were introduced,namely,thermal power generation,organic Rankine cycle power generation technology,and CPGS-sCO2 Brayton combined cycle power generation technology based on solar energy as auxiliary heat source.
CO2 plume geothermal systemenhanced geothermal systemsgeothermal energythermal power generationorganic Rankine cycle