Abstract—

An improvement of supercritical carbon dioxide Brayton cycle with regeneration coupled with a (carbon dioxide/ethane) shielded as a second cycle before starting the cooling phase in a solar tower installation was carried out. The power block unit in the cycle, as mentioned above designed to produce 160 MWe in the Ouarzazate region, where a gigantic solar project conducted in Morocco with a design point DNI evaluated as 823 W/m². So, the aim to compare the performance of the s-ethane against the s-CO₂, operating in the secondary cycle, two critical parameters studied are, the first one is the effect of turbine inlet temperature on net power. And the second one is the effect of secondary Brayton cycle pressure on the system efficiency. The cycle efficiency, founded to be 58% at high turbine inlet temperature by including an aided s-ethane cycle. The research work is in progress. In perspectives, specific other possible configurations and other trans-critical fluids will address in the secondary Brayton cycle.

中文翻译：

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太阳能热发电系统效率的提高引入超临界CO 2 / C 2 H 6的次级布雷顿循环

摘要—

进行了超临界二氧化碳布雷顿循环的改进，该再生与在太阳能塔安装中开始冷却阶段之前作为第二个循环屏蔽的（二氧化碳/乙烷）结合在一起。如上所述，循环中的动力块单元设计为在瓦尔扎扎特地区生产160 MWe，该地区在摩洛哥进行了一项大型太阳能项目，设计点DNI评估为823 W / m ²。因此，目的是比较s-乙烷与s-CO _2的性能在二级循环中，研究了两个关键参数，第一个是涡轮机入口温度对净功率的影响。第二个是次级布雷顿循环压力对系统效率的影响。通过包括辅助的S-乙烷循环，循环效率在高涡轮进口温度下达到58％。研究工作正在进行中。从角度来看，特定的其他可能的配置和其他跨临界流体将在次级布雷顿循环中解决。