In recent years, the power cycle using supercritical carbon dioxide (S-CO2) as a working medium has gradually become a research hotspot on a global scale. Its excellent characteristics are disruptive to energy conservation and emission reduction and new energy industries (especially solar thermal power generation and nuclear energy). The significance of the application is very broad. At present, the domestic research on supercritical carbon dioxide power cycle technology is still in the initial stage of exploration. Therefore, the researcher of the Energy and Power Research Center of the Institute of Engineering Thermophysics of the Chinese Academy of Sciences cooperated with Jiangsu Jintongling Fluid Machinery Co., Ltd. to develop the supercritical carbon dioxide power cycle system and key components design for two different high and low temperature heat sources. . For the high-temperature heat source of about 550°C, the Energy and Power Research Center of the Institute of Engineering Thermophysics completed the design of the Brayton cycle power generation system using the recompression and secondary heat recovery modes, and analyzed and compared several different compressors-turbines and heat recovery. Under the matching form of the instrument, the optimization design of the parameters of the 1MWe power generation system was carried out in terms of the operating efficiency, structural characteristics, cost, and regulation of the entire system. According to the system configuration, the various stages of implementation of the power system integration demonstration were determined. The aerodynamic and structural design of key components such as turbines, regenerators, etc., as well as the improvement of system construction and experimental control programs at each stage were carried out. Based on the previous work of the high-temperature heat source system, researchers at the Energy and Power Center have also developed and designed an S-CO2 power cycle system that can be applied to medium-to-low-temperature heat sources from 200°C to 400°C. The system cycle efficiency can reach 18%-29%. After comprehensively considering the operating efficiency, construction cost and system reliability factors of the entire system, the system parameters were optimized for the S-CO2 power cycle system of medium and low-temperature heat sources, and preliminary technical evaluations of the core components such as impeller machinery and heat exchangers were completed. . At present, the 550°C high temperature heat source Brayton cycle system has completed the overall engineering design, and the related system integration demonstration project construction is progressing steadily; 200°C-400°C low-temperature heat source S-CO2 power cycle system has completed the overall parameter design and core components. The preliminary assessment is proceeding with related engineering design. Edta 2Na,Edta Disodium Salt,Disodium Edta In Food,Disodium Edta Shaanxi United Xingchuang International Co., Ltd. , https://www.lxcgj.com