Particle receivers are one of the candidates for the next generation of CSP plants, whose goal is to reduce the levelized cost of electricity (LCOE) to 0.05 $/kWh. This paper presents a techno-economic analysis to study if a CSP system with free-falling particle receiver can achieve this goal. The plant analyzed integrates two ground-based bins to store the excess energy and a supercritical CO2 cycle to generate electricity. The model used for the analysis presents several upgrades to previous particle systems models in order to increase its fidelity, accuracy, and representativeness of an actual system. The main upgrades are the addition of off-design conditions during the annual simulations in all the components and an improved receiver model validated against CFD simulations. The size of the main components is optimized to obtain the system configuration with minimum LCOE. The results show that particle CSP systems can reduce the LCOE to 0.056 $/kWh if the configuration is composed of 1.61 × 106 m2 of heliostats, a 250 m high tower with a 537 m2 falling particle curtain, and 16 h thermal energy storage.

中文翻译：

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带有自由落体粒子接收器的 CSP 装置的技术经济优化

粒子接收器是下一代 CSP 发电厂的候选者之一，其目标是将平准化电力成本 (LCOE) 降低到 0.05 美元/千瓦时。本文提出了一项技术经济分析，以研究带有自由落体粒子接收器的 CSP 系统是否可以实现这一目标。分析的工厂集成了两个地面垃圾箱来存储多余的能量，并集成了一个超临界二氧化碳循环来发电。用于分析的模型对以前的粒子系统模型进行了多次升级，以提高其对实际系统的保真度、准确性和代表性。主要的升级是在所有组件的年度仿真期间添加了非设计条件，以及针对 CFD 仿真验证的改进接收器模型。优化主要部件的尺寸以获得具有最小LCOE的系统配置。结果表明，如果配置由 1.61 × 106 m2 定日镜、250 m 高塔和 537 m2 落下粒子幕和 16 h 热能存储组成，粒子 CSP 系统可以将 LCOE 降低至 0.056 $/kWh。