The severe operation conditions and great capital investment of solar power tower central receivers motivate the lifetime analysis of a molten-salt external-cylindrical-tubular receiver, considering five alloy alternatives for its tubes manufacturing: Haynes 230, alloy 316H, Inconel 625, 740H and 800H. An analytical low-computational cost methodology is employed, considering the temperature dependence of tube material properties, elastic-plastic stresses/strains and stress relaxation. Thus, creep and fatigue experimental data available in the literature for these alloys are compiled in this work, providing the coefficients required for the methodology followed.

A great alloys operation limitation is the film temperature to avoid corrosion issues; the most permissive are H230, 740H and 800H (650 °C), followed by Inconel 625 (630 °C) and 316H (600 °C). This, and the twice the yield strength, is regarded to set the heliostat field aiming strategy as equatorial as possible for each alloy, resulting in great power production divergences: 24% and 65% less for 625 and alloy 316H receivers with respect to the 740H receiver. Then, the lifetime analysis for a clear design day operation, representative of the receiver during ideal operation, is performed. The stress relaxation regard becomes critical for the accurate damage prediction; alloys 316H and 800H show stress reset during operation, not benefitting from a global stress relaxation. Thus, 800H exhibits a poor endurance. For the clear-day assumption, 740H shows the best lifetime and costs/power performance; the levelized cost of alloy of H230, 625 and alloy 316H is 0.01, 0.09 and over 0.25, respectively, with respect to 740H.

太阳能塔式中央接收器的恶劣运行条件和巨大的资本投资激发了熔盐外圆柱管接收器的寿命分析，考虑了五种用于其管制造的合金替代品：Haynes 230、合金 316H、Inconel 625、740H 和800小时。考虑到管材特性、弹塑性应力/应变和应力松弛的温度依赖性，采用了一种分析性低计算成本方法。因此，这些合金的文献中可用的蠕变和疲劳实验数据在这项工作中进行了汇编，提供了所遵循的方法所需的系数。

一个很大的合金操作限制是为了避免腐蚀问题的薄膜温度；最宽松的是 H230、740H 和 800H (650 °C)，其次是 Inconel 625 (630 °C) 和 316H (600 °C)。这和两倍的屈服强度被认为将定日镜场瞄准策略对每种合金设置为尽可能赤道，从而产生很大的功率输出差异：625 和合金 316H 接收器相对于 740H 接收器减少 24% 和 65%接收者。然后，对一个清晰的设计日运行（代表理想运行期间的接收器）进行寿命分析。应力松弛问题对于准确的损伤预测变得至关重要；合金 316H 和 800H 在操作期间显示出应力复位，没有受益于整体应力松弛。因此，800H 表现出较差的耐久性。对于晴天假设，740H 显示出最佳的使用寿命和成本/功率性能；相对于740H，H230、625和316H合金的平准化成本分别为0.01、0.09和0.25以上。