Packed bed thermocline heat storage is a promising thermal energy storage alternative to molten salt storage in concentrating solar power plants. Such technology opens the way for using worldwide available materials such as natural rocks and some industrial residues. Packed bed thermocline is highly interesting for small scale plants using medium grade heat as well as for large heat consuming industries and has a potential of increasing the local content of future solar power projects in Morocco and other neighboring countries. In this paper, two packed bed thermocline storage systems are proposed based on the sensible and latent heat storage approaches. A numerical study of both systems is carried out to assess their performance in terms of storage capacity, output stability, and charge/discharge efficiency for a potential pilot application. The target facility is an experimental 1 MWe concentrating solar power with organic Rankine cycle plant at the research platform Green Energy Park in Morocco.

中文翻译：

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小型光热电站中型显热和潜热蓄热系统数值研究

在聚光太阳能发电厂中，填充床温跃层蓄热是一种很有前途的热能储存替代熔盐储存。这种技术为使用全球可用的材料（如天然岩石和一些工业残留物）开辟了道路。填充床温跃层对于使用中等热量的小型工厂以及大型热耗行业非常有吸引力，并且有可能增加摩洛哥和其他邻国未来太阳能项目的当地含量。在本文中，基于显热和潜热存储方法提出了两种填充床温跃层存储系统。对这两个系统进行了数值研究，以评估它们在存储容量、输出稳定性和充电/放电效率方面的性能，以用于潜在的试点应用。