Solar power tower technology has strong potential among the other concentration solar power techniques for large power generation. Therefore, it is necessary to make a new and efficient power conversion system for utilizing the solar power tower system. In present research, a novel combined cycle is proposed to generate power for the application of the solar power tower. The pre-compression configuration of the Brayton cycle is used as a topping cycle in which helium is taken as the working fluid. The transcritical CO₂ cycle is used as bottoming cycle for using the waste heat. The proposed system is investigated based on exergy, energy, and exergoenvironmental point of view using computational technique engineering equation solver. Also, the parametric analysis is carried out to check the impact of the different variables on the system performance. It is concluded that the overall plant's optimized thermal and exergy efficiencies are obtained as 31.59% and 33.12%, respectively, at 800 °C optimum temperature of combined cycle and 850 W m⁻² of direct normal irradiation and 2.278 of compressor pressure ratio. However, exergetic stability factor and exergoenvironmental impact index are observed as 0.5952 and 0.6801 respectively. The present proposed system performs better than the previous studies with fewer components.

中文翻译：

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通过太阳能驱动的布雷顿和跨临界二氧化碳循环集成实现可持续发电：综合 3E（能源、火能和火能环境）评估

塔式太阳能发电技术在其他聚光太阳能发电技术中具有巨大的潜力。因此，有必要设计一种新型高效的电力转换系统来利用太阳能塔式系统。在目前的研究中，提出了一种新颖的联合循环来发电，用于太阳能发电塔的应用。布雷顿循环的预压缩配置用作顶循环，其中以氦气为工作流体。跨临界CO ₂循环用作利用废热的底循环。使用计算技术工程方程求解器，基于火用、能量和火用环境的观点对所提出的系统进行研究。此外，还进行参数分析以检查不同变量对系统性能的影响。结果表明，在联合循环最佳温度800 ℃、直接法向辐照功率850 W m ^-2和压气机压比2.278 时，整个装置的优化热效率和火用效率分别为31.59%和33.12%。然而，能量稳定因子和能量环境影响指数分别为 0.5952 和 0.6801。目前提出的系统比以前的研究用更少的组件表现得更好。