超临界二氧化碳布雷顿循环在能源领域的应用研究

he application of supercritical carbon dioxide Brayton cycle in energy field has become a hot topic. According to the basic principle of supercritical CO2 Brayton cycle, the cycle efficiency of supercritical CO2 Brayton cycle in different energy fields is compared with that of traditional steam working fluid. In the field of thermal power, the improvement of application efficiency is less, about 2% ~ 4%, but the construction cost is also higher than 5% ~ 8%; in the field of nuclear power, the efficiency improvement is the most obvious, which can reach about 12%, and the application prospect is the best; in the field of solar power generation, although the cycle efficiency can be increased by 3% ~ 4%, the construction cost is too high and it is difficult to be popularized in a short time. Compared with Brayton cycle, all of them have the advantages of high safety in supercritical steam cycle.